In chemistry , bondenergy E is a measure of bond strength in a chemical bond . It is the heat required to break Avogadro s number of molecules into their individual atoms. Ref Frey For example, the carbon hydrogen bondenergy in methane E C H is the enthalpy change involved with breaking up one molecule of methane into a carbon atom and 4 hydrogen Radical chemistry radical s divided by 0.5. br Bondenergy E should not be confused with bond dissociation energy . Some examples Some bondenergy trends ... H F Cl Br I OH N NH sub 2 sub bond energies H X 104 436 135 570 103 431 87 366 71 298 119 498 110 460 bond energies CH sub 3 sub X 105 440 109 452 84 352 70 293 56 236 91 382 87 365 Bondenergy distance correlation Bond strength energy can be directly related to the bond length bond distance. Therefore ... to determine the bond strength. For example, the covalent radius of boron is estimated at 83.0 picometer pm , but the bond length of B B in B sub 2 sub Cl sub 4 sub is 175 pm, a significantly larger value. This would indicate that the bond between the two boron atoms is a rather weak single bond. In another example, the metallic radius of rhenium is 137.5 pm, with a Re Re bond length of 224 pm in the compound Re sub 2 sub Cl sub 8 sub . From this data, we can conclude that the bond is a very strong bond or a quadruple bond . This method of determination is most useful for covalently bonded compounds. Ref Alcock Determinants of ionic bondenergy There are several contributing factors but usually ... BiologyPages B BondEnergy.html BondEnergy. 11 July 2003. External links http www.wiredchemist.com chemistry data bond energies lengths.html Table of Bond Energies. http www.cem.msu.edu reusch OrgPage bndenrgy.htm Table of standard bond energies and bond dissociation energies. Category Chemical bond properties Energy Category Chemical bonding ar es Energ a de enlace fr nergie .... Ref link See also Nuclear binding energy Electron binding energy Lattice energy References Note ... more details
In chemistry , bond dissociation energy BDE or D sub 0 sub , is one measure of the bond strength in a chemical bond . It is defined as the enthalpy standard enthalpy change when a bond is cleaved by homolysis , ref GoldBookRef title Bond dissociation energy file B00699 year 1994 ref with reactants and products of the homolysis reaction at 0 K absolute zero . For instance, the bond dissociation energy ... Definitions of BDE and related parameters The bond dissociation energy is sometimes also called the bond dissociation enthalpy or bond enthalpy , but these terms are not strictly equivalent, as they refer ... 2003 volume 36 issue 4 pages 255 263 doi 10.1021 ar020230d pmid 12693923 ref BDE vs bondenergy Except in the case of diatomic molecules, the bond dissociation energy is different from the bondenergy , which is an average calculated from the sum of the bond dissociation energies of all bonds in a molecule ... H oxygen O hydrogen H bond of a water molecule hydrogen H oxygen O hydrogen H has 493.4 kJ mol of bond dissociation energy, and 424.4 kJ mol is needed to cleave the remaining oxygen O hydrogen H bond. The bondenergy of the covalent oxygen O hydrogen H bonds in water is 458.9 kJ mol, which is the average of the values. Hydrogen bond dissociation energy in water is about 23 kJ mol. ref Principles ... mol for D CH sub sub H and finally 81 kcal mol 339 kJ mol for D C H . The bondenergy is thus 99 kcal ... center rowspan 2 Bond rowspan 2 Bond colspan 2 Bond Dissociation Energy rowspan 2 Comment kcal mole ... consumes significant energy The data tabulated above shows how bond strengths vary over the periodic ... 2 Bond rowspan 2 Bond colspan 2 Bond Dissociation Energy rowspan 2 Comment kcal mole kJ mole H sub ... Bondenergy Binding energy Chemical bond References references Category Chemical bond properties ... kcal mol 6 kJ mol in the case of a bond to hydrogen. ref name BDE cite journal title Bond Dissociation ... for removing successive hydrogen atoms from methane the bond dissociating energies are 104 kcal mol ... more details
Wiktionarypar bondBond , bonds , bonded , and bonding may refer to TOC right Fiduciary bonds Bond finance , in finance, a type of debt security Government bond , a bond issued by a national government War bond s, a type of government bond used to raise funding for a war effort Municipal bond , a bond issued by a city or local government Corporate bond , a bond issued by a corporation Mortgage bond , in South Africa a bond or mortgage bond is the usual term for property mortgage. Insurance bond or investment bond , a life assurance based single premium investment Surety bond , a three party contract ... Performance bond , a surety bond for completion of work under a contract Bail bond agent, or bail bondsman , a person or corporation providing a surety bond for return of a person to a court Tenancy bond or damage deposit , a deposit taken by a landlord in relation to rental of a property Catastrophe bond or cat bond , a form of reinsurance Bonded labor or debt bondage , a system of servitude where someone must work to pay off a debt Bond of association , a basic building block of credit unions and co operative banks Bond vigilante , a form of political protest by selling bonds Other legal terms Peace bond , a protection order from a Canadian court Bond of manrent , a Scottish clan treaty Bond of Association , a British legal document from the 16th century Bond v. United States , a 2000 Supreme Court case regarding the fourth amendment Bond v The Queen , a 2000 High Court of Australia case Physical sciences Bond number , in fluid mechanics, a dimensionless number expressing the ratio of gravitational forces to surface tension forces Chemical bond , the physical phenomenon of chemical substances being held together by attraction of atoms Covalent bond , between nonmetals Ionic bond , between metal and nonmetals Metallic bond , between metals Bond albedo , a measure of the electromagnetic radiation reflected from an astronomical body Bond graph , a graphical description of a physical ... more details
In Bond may refer to Bottled in bond When American made whiskeys are made to certain quality. Wines in bond Under UK law, wines in bond are wines that must be stored in a bonded warehouse approved by HM Customs & Excise. disambig ... more details
Infobox Film name The Bond image image size caption director Charlie Chaplin producer writer Charlie Chaplin narrator starring Edna Purviance br Albert Austin br Sydney Chaplin music cinematography editing distributor First National First National Pictures Inc. released 1918 in film 1918 runtime 11 minutes country USA language Silent film br English language English intertitles budget The Bond is a propaganda film created by Charlie Chaplin at his own expense for the Liberty Load Committee for theatrical release to help sell U.S. War bond Liberty Bonds during World War I . Made in 1918 with Edna Purviance , Albert Austin and Sydney Chaplin , the film has a distinctive visual motif set in a simple plain black set with starkly lit simple props and arrangements. The story is a series of sketches humorously illustrating various bonds like the bond of friendship and of marriage and, most important, the Liberty Bond, to knockout K.O. the Kaiser which Charlie does literally. There was also a United Kingdom British version with Uncle Sam replaced by John Bull and promotes War Bonds. Media gallery widths 250px Image Charlie Chaplin, bond of friendship, 1918.ogg A video clip from the silent film, The Bond 1918 Image Charlie Chaplin, the Marriage Bond.ogg A video clip from the silent film, The Bond 1918 Image Charlie Chaplin, The Bond, 1918.ogg A video clip from the silent film, The Bond 1918 gallery Cast Charles Chaplin Charlie Edna Purviance Charlie s Wife Albert Austin Friend Sydney Chaplin The Kaiser External links CommonsCat The Bond imdb title id 0008907 title The Bond http www.archive.org details CC 1918 09 29 TheBond Complete film at Archive.org Charlie Chaplin DEFAULTSORT Bond, The Category 1918 films Category Black and white films Category Films directed by Charlie Chaplin ... American silent films Category Articles containing video clips war film stub de The Bond es The Bond fr The Bond it The Bond ja pt The Bond ru , 1918 ... more details
About the BOND database software Bond disambiguation Bond orphan date June 2010 BOND Building Object Network Databases started development in late 2000 as a rapid application development tool for the GNOME Desktop by Treshna Enterprises . Its aim was to fill a gap that traditional Microsoft Windows applications like Borland Delphi , Microsoft Access and Visual Basic filled on the Windows desktop, but targeted for the Linux environment. Its goal was to allow developers to quickly build database forms in Extensible Markup Language XML for backend SQL databases. It has been employed extensively by Treshna Enterprises to develop applications such as PayMaster an opensource payroll application and GymMaster a commercial gym management application . Description It uses PostgreSQL as its backend database and GTK as its front end. Windows and HTML driven front ends are also available. While it initially worked closely with Glade Interface Designer Glade and the Gnome Desktop, newer versions have focused on more web oriented with Ajax programming AJAX driven Widget computing widgets . The Glade Extensible Markup Language XML format was abandoned a number of years ago and a new XML schema was developed to be more flexible with the range of data required for storing database information. BOND makes use of BONDDB which serves as a layer between the BOND API and the PostgreSQL backend. In the future, BOND aims to be a free open source solution that allows users to quickly create their own databases from scratch without being a skilled programmer or DBA. External links http www.treshna.com bondBOND development website Category GNOME database software stub ... more details
produce a force on charges. When these charges move through a distance, a flow of energy occurs. The electric potential energy in the atmosphere then is transformed into thermal energy, light, and sound, which are other forms of energy. In physics , energy lang grc energeia activity, operation ref cite web url http www.etymonline.com index.php?term energy title Energy work Online Etymology ... as a force acting through a distance a length of space , energy is always equivalent to the ability ... energy contained in an object is identified with its mass , and energy like mass , cannot be created or destroyed. When matter ordinary material particles is changed into energy such as energy of motion ... into other types of energy and thus into Work thermodynamics work , on other systems. Energy, like mass, is a scalar physics scalar physical quantity. In the International System of Units SI , energy ... and the distances that the forces act through. A system can transfer energy to another system by simply transferring matter to it since matter is equivalent to energy, in accordance with its mass . However, when energy is transferred by means other than matter transfer, the transfer produces ... of force s applied through distances within the target system. For example, a system can emit energy to another by transferring radiating electromagnetic energy , but this creates forces upon the particles that absorb the radiation. Similarly, a system may transfer energy to another by physically impacting it, but that case the energy of motion in an object, called kinetic energy , results in forces acting over distances new energy to appear in another object that is struck. Transfer of thermal energy by heat occurs by both of these mechanisms heat can be transferred by electromagnetic radiation, or by physical contact in which direct particle particle impacts transfer kinetic energy. Energy may be stored in systems without being present as matter, or as kinetic or electromagnetic energy ... more details
In chemistry , bond strength is measured between two atom s joined in a chemical bond . ref JerryMarch ref It is the degree to which each atom linked to another atom contributes to the valency chemistry valency of this other atom. Bond strength is intimately linked to bond order . Bond strength can be quantified by bondenergy requires lengthy calculations, even for the simplest bonds. bond dissociation energy Another criterion of bond strength is the qualitative relation between bond energies and the overlap of atomic orbital s of the bonds Linus Pauling Pauling and Robert S. Mulliken Mulliken . The more these overlap, the more the bonding electron s are to be found between the Atomic nucleus nuclei and hence stronger will be the bond. This overlap can be calculated and is called the overlap integral . References Reflist category Chemical bond properties Strength ar es Fuerza de enlace ... more details
Bond cleavage , or scission , is the splitting of chemical bond s. If the two electrons in a cleaved covalent bond are divided between the products, the process is known as homolytic fission or homolysis . Alternatively, the case where both electrons are retained by one product is known as heterolytic fission heterolysis . The term bond dissociation energy refers to the energy required to cleave a bond typically homolytically . In biochemistry the process of breaking down large molecules by splitting their internal bonds is catabolism . Enzymes which catalyse bond cleavage are known as lyase s, unless they operate by hydrolysis or oxidation reduction, in which case they are known as hydrolase s and oxidoreductase s respectively. chem stub Category Chemical bonding it Scissione chimica ... more details
Bond orders of one half can be stable, as shown by the stability of H SUB 2 SUB SUP SUP bond length 106 pm, bondenergy 269 kJ mol and He SUB 2 SUB SUP SUP bond length 108 pm, bondenergy 251 kJ mol ...Bond order is the number of chemical bond s between a pair of atom s. For example, in diatomic nitrogen N N the bond order is 3, while in acetylene H C C H the bond order between the two carbon atoms is also 3, and the C H bond order is 1. Bond order gives an indication to the stability of a bond. In a more advanced context, bond order need not be an integer. A good example of this is bonds between carbon in the molecule benzene , where the delocalized molecular orbital s contain 3 pi electron s over six carbons essentially yielding half a pi bond . Together with the sigma bond the bond order is 1.5. Furthermore, bond orders of 1.0, for example, can arise under complex scenarios and essentially refer to bond strength relative to bonds with order 1. In molecular orbital theory , bond order is also .... Bond order is also an index of bond strength and is also used extensively in valence bond theory ... Prentice Hall, 2007 , 409. ref The bond order concept is used in molecular dynamics and bond order potential s. The magnitude of the bond order is associated with the bond length . According to Linus Pauling in 1947, the bond order is experimentally described by math s ij exp left frac R ij d ij b right math where math R ij math is the bond length experimentally measured, math d ij math is the single bond length, and b is a constant, depending on the atoms. Pauling suggested a value of 0.353 for b. The above definition of bond order is somewhat ad hoc and only easy to apply for diatomic molecules. A standard quantum mechanical definition for bond order has been debated for a long time. ref IUPAC Gold Book http goldbook.iupac.org BT07005.html bond order http www.iupac.org goldbook BT07005.pdf PDF ref References Reflist DEFAULTSORT Bond Order Category Chemical bond properties Order ar ... more details
Image Delta bond formation 2D.png thumb right 200px Formation of a delta bond by the overlap of two d orbitals File Dimolybdenum Mo2 delta bond Spartan HF 3 21G 3D side.png thumb right 200px 3D model of a boundary surface of a delta bond in Mo sub 2 sub In chemistry , delta bonds bonds are chemical bond s of the Covalent bond covalent type, where four lobes of one involved atomic orbital orbital overlap overlap four lobes of the other involved atomic orbital. This overlap leads to the formation of a bonding molecular orbital with two nodal planes which contain the internuclear axis and go through both atoms. The Greek letter in their name refers to d orbital s, since the orbital symmetry of the delta bond is the same as that of the usual 4 lobed type of d orbital when seen down the bond axis. In chemistry , in sufficiently large atom s, occupied d orbital s are low enough in energy to participate in chemical bond bonding . Delta bonds are usually observed in organometallic species. Some ruthenium and molybdenum compounds contain a quadruple bond , consisting of one sigma bond , two pi bond s and one delta bond. The orbital symmetry of the delta bonding orbital is different from that of a Pi bond pi antibonding antibonding orbital , which has one nodal plane containing the internuclear axis and a second nodal plane perpendicular to this axis between the atoms. Theoretical chemists have conjectured that higher order bonds phi bonds and gamma bonds , corresponding to overlap of f and g orbitals are possible, with even more overlapping lobes of their component atomic orbitals, but no experimental evidence for these has yet been observed. File Phi bond f orbitals 2D.png 150px suitably aligned f orbitals could form a phi bond File Phi bond boundary surface diagram 2D.png 150px cartoon of a phi bond s boundary surface See also Molecular geometry References F. Albert Cotton ... bonds DEFAULTSORT Delta Bond Category Chemical bonding es Enlace fa fr Liaison ... more details
Refimprove date March 2011 Expand section Pricing Climate bonds date March 2011 Climate bonds are Bond finance bonds issued by a government or corporate entity in order to raise finance for climate change mitigation or Climate change adaptation adaptation related projects or programs. Like normal bonds , the issuing entity guarantees to repay the Bond finance bond over a certain period of time, plus either a fixed or variable rate of return. The difference is that climate bonds are Asset backed security asset backed , or ring fenced , with investors being promised that all funds raised will only go to climate related programs or assets, such as renewable energy plants or climate mitigation focused funding programs. In their UNEP paper on Investors and climate change, Mackenzie and Ascui ref Mackenzie, C and Ascui. F. Investor leadership on climate change an analysis of the investment community s role on climate change, and snapshot of recent investor activity. Published by the UNEP Finance Initiative and UNPRI, 2009. ref differentiate a climate bond and from a green bond A climate bond is an extension of the green bond concept. Green bonds are issued by a government or corporate entity in order to raise the finance for an environmental project. Climate bonds would be issued by governments or others to raise finance for investments in emission reduction or climate change adaptation. Climate Bonds are theme bonds, similar in principle to a railway bond of the 19th century, the war bonds of the early 20th century or the highway bond of the 1960s. Theme bonds are designed to Allow ... way based on the creditworthiness of the issuer, and tradeable, market conditions permitting, in Bond market international secondary bond markets . These instruments can theoretically be issued at all levels of the Bond market fixed income market , from sovereigns to corporate. References See http ... climatebonds.html Mongabay Categories DEFAULTSORT Climate Bond Category Government bonds Category ... more details
charged ions are then attracted to each other, and their bonding releases energy. The net transfer of energy is that energy leaves the atoms, so the reaction is able to take place. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ion ... a nonmetal . Pure ionic bonding cannot exist all ionic compounds have some degree of covalent bond ing. Thus, an ionic bond is considered a bond where the ionic character is greater than the covalent character. The larger the difference in electronegativity between the two atoms involved in the bond, the more ionic polar the bond is. Bonds with partially ionic and partially covalent character are called polar covalent bond s. Ionic bonding is a form of noncovalent bonding . Ionic compounds conduct ... point and tend to be soluble in water. Formation The formation of an ionic bond proceeds when the cation, whose ionization energy is low, releases some of its electrons to achieve a stable electron configuration ... entities forms the ionic bond. For example, common table salt is sodium chloride . When sodium ... to form lithium fluoride . Lithium has a low ionization energy and readily gives up its lone valence ... forms an ionic bond. The removal of electrons from the cation is endothermic, raising the system s overall energy. There may also be energy changes associated with breaking of existing bonds or the addition ... s valence electrons and the subsequent attraction of the ions to each other releases energy and thus lowers the overall energy of the system. Ionic bonding will occur only if the overall energy change for the reaction is favourable when the reaction is exothermic. The larger the resulting energy change, the stronger the bond. The low electronegativity of metals and high electronegativity of non ... adopted by many alkali metals alkali halides, and binary oxides such as magnesium oxide MgO . Bond strength main Lattice energy For a solid crystalline ionic compound the enthalpy change in forming ... more details
Alan Bond may refer to Alan Bond businessman born 1938 Alan Bond rocket developer born 1944 Alan M. Bond , Australian chemist hndis name Bond, Alan DEFAULTSORT Bond, Alan ... more details
Unreferenced date August 2009 Image Phosphodiester Bond Diagram.svg thumb 200px Diagram of phosphodiester bonds PO sub 4 sub sup 3 sup between nucleotides. Which presents Thymine U and two molecules of Adenine A . A phosphodiester bond is a group of strong covalent bond s between a phosphate group and two 5 carbon ring carbohydrates pentoses over two ester bonds. Phosphodiester bonds are central to most life on Earth , as they make up the backbone of the strands of DNA. In DNA and RNA , the phosphodiester bond is the linkage between the 3 carbon atom of one sugar molecule and the 5 carbon of another, deoxyribose in DNA and ribose in RNA. The phosphate groups in the phosphodiester bond are negatively charged. Because the phosphate groups have a Equilibrium constant pK sub a sub near 0, they are negatively charged at pH 7. This repulsion forces the phosphates to take opposite sides of the DNA strands and is neutralized by proteins histones , metal ions such as Magnesium in biology Nucleic acids magnesium , and polyamine s. In order for the phosphodiester bond to be formed and the nucleotide s to be joined, the tri phosphate or di phosphate forms of the nucleotide building blocks are broken apart to give off energy required to drive the Enzyme enzyme catalyzed reaction. When a single phosphate or two phosphates known as pyrophosphate s break away and catalyze the reaction, the phosphodiester bond is formed. Citation needed date August 2009 Hydrolysis of phosphodiester bonds can be catalyzed by the action of phosphodiesterase s which play an important role in repairing DNA sequences. Citation needed date August 2009 In biological systems, the phosphodiester bond between two ribonucleotide ..., for instance a bond in a molecule of cyclic AMP or cyclic GMP. An enzyme that plays an important ... to form a phosphodiester bond between the nucleotides. See also Phosphodiesterase Phosphodiesterase ... DEFAULTSORT Phosphodiester Bond Category Organophosphates Category Chemical bonding Category Molecular ... more details
that the arcs in bond graphs represent Undirected graph bi directional exchange of physical energy ... flow. Table 1 most common energy domains and the corresponding effort and flow . A bond ...A bond graph is a Graph mathematics graphical representation of a physical dynamical system dynamic system ... flow of information. Also, bond graphs are multi domain and domain neutral. This means a bond graph can incorporate multiple domains seamlessly. The Bond Graph is composed of the bonds which link together single port , double port and multi port elements see below for details . Each bond represents the instantaneous flow of energy dE dt or power. The flow in each bond is denoted a pair of variables called power variables whose product is the instantaneous power of the bond. For example, the bond of an electrical system would represent the flow of electrical energy and the power variables would ... sign convention. This defines the assumed direction of positive energy flow. As with electrical ... stroke . This is a vertical bar placed on only one end of the bond. It is not arbitrary ... among ports. Any port single, double or multi attached to the bond shall specify either effort or flow by its causal stroke, but not both. The port attached to the end of the bond with the causal stroke specifies the flow of the bond. And the bond imposes effort upon that port. Equivalently, the port on the end without the causal stroke imposes effort to the bond, while the bond ... Energy Domain effort e symbol e unit metric e unit imperial flow f symbol f unit metric f unit ... continuous time behaviors can be modeled as instantaneous phenomena by using a hybrid bond graph . History The Bond Graph was invented by Henry Paynter. ref Paynter, Henry M., Analysis and Design of Engineering Systems , The M.I.T. Press, ISBN 0262160048. ref . The term Bond Graph comes from the fact ... of a bond graph is that Power physics power is transmitted between connected components by a combination ... more details
1em 1em border collapse collapse colspan 3 Typical bond length s in pm br and bondenergy energies in kJ ... often have about half the bondenergy of a 2 electron bond, and are therefore called half bonds . However ...A chemical bond is an attraction between atom s that allows the formation of chemical substance s that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite .... The strength of chemical bonds varies considerably there are strong bonds such as covalent bond covalent or ionic bond s and weak bonds such as intermolecular force Dipole dipole interations dipole .... These electrons cause the nuclei to be attracted to each other, and this attraction results in the bond ... view of a so called covalent bond covalent bond , one or more electrons often a pair of electrons ... shared. In a polar covalent bond , one or more electrons are unequally shared between two nuclei. In a simplified view of an ionic bond ionic bond , the bonding electron is not shared at all, but transferred. In this type of bond, the outer atomic orbital of one atom has a vacancy which allows addition of one or more electrons. These newly added electrons potentially occupy a lower energy ... a net positive charge, and the other to assume a net negative charge. The bond then results from electrostatic ... and rarely mentioned type of bonding is metallic bond metallic bond . All bonds can be explained ... theories are valence bond theory which includes orbital hybridization and Resonance chemistry ... ligand field theory . Electrostatics are used to describe bond polarities and the effects they have ... into the nature of the chemical bond , from as early as the 12th century, supposed that certain types ... the concept of the Covalent bond electron pair bond , in which two atoms may share one to six electrons, thus forming the single electron bond , a single bond , a double bond , or a triple bond ... bond s. Both Lewis and Kossel structured their bonding models on that of Abegg s rule 1904 . In 1927 ... more details
Infobox character name Billy Bond image Deleted image removed Image Billy bond.jpg 200px caption Ashley Walters as Billy Bond first As One Flew Out of the Cuckoo s Nest, One Flew In last Big Daddy Calling gender Male occupation Confidence trick Grifter title portrayer Asher D British rapper Ashley Walters Billy Bond is a character in the popular BBC television show Hustle TV series Hustle . He is played by Asher D British rapper Ashley Walters . Billy Bond was the newest member of the Hustle crew. He joined in series 4 after Michael Stone Hustle Michael Stone departed the group. His life before joining the Hustle crew he worked the short con on the streets and claims that Danny Blue Hustle Danny Blue was the only con artist able to teach him anything, hence his ambition to join the crew. He describes himself as a work of art, a force of nature who can separate a mark from his money quicker than any man alive . He spent most of his formative years in and out of foster homes. He fell into a bad crowd and was involved with gangs and drug dealing before finding his skill as a grifter. He feels a sense of injustice about the world and grifting is his way of fighting back. He can see the beauty that exists in a perfectly executed con and has studied the art of the great con men. He has the spirit and energy to be a great grifter now he wants the wisdom that comes with experience. He did not return for the fifth series and no explanation was given. External links http www.bbc.co.uk drama hustle billy bond.shtml Billy Bond Hustle, BBC website Hustle Category Fictional con artists Bond, Billy Category Hustle characters Bond, Billy BBC TV stub ... more details
In molecular geometry , bond length or bond distance is the average distance between nuclei of two chemical bond bonded atom s in a molecule . Explanation Bond length is related to bond order , when more electron s participate in bond formation the bond will get shorter. Bond length is also inversely related to bond strength and the bond dissociation energy , as a stronger bond is also a shorter bond, however, there are also few exceptions Ex, H H and H O, the latter one has longer and stronger bond . In a bond between two identical atoms half the bond distance is equal to the covalent radius . Bond lengths are measured in molecules by means of X ray diffraction . A set of two atoms sharing a bond is unique going from one molecule to the next. For example the carbon to hydrogen bond in methane ... the general structure is the same. Bond lengths of carbon with other elements A table with experimental single bond s for carbon to other elements Ref 1 is given below. Bond lengths are given in picometer s. By approximation the bond distance between two different atoms is the sum of the individual ... trend, bond distances decrease across the row in the periodic table and increase down a group ... 7 colspan 3 align left style background ccccff Table 1. Bond distance of carbon to other elements ... isbn 0 8493 0465 2 ref Bond lengths in organic compounds The actual bond length between two atoms in a molecule ... of the substituent s. The carbon carbon bond length in diamond is 154 pm which is also the largest bond length that exists for ordinary carbon covalent bonds. Unusually long bond lengths do exist. In one, tricyclobutabenzene , a bond length of 160 pm is reported. The current record holder is another ... and Benzodicyclobutadienes Synthesis in the Solid State and Anomalies in the Bond Lengths ... have angles of 120 . Image Unusualbondlength.png center 200px cyclobutabenzene with a bond length in red of 174 pm The existence of a very long C C bond length of up to 290 pm is claimed ... more details
Refimprove date December 2008 The Bond albedo , named after the American astronomer George Phillips Bond 1825 1865 , who originally proposed it, is the fraction of power physics power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space. It takes into account all wavelengths at all Phase angle astronomy phase angles . It is an important quantity for characterizing a planetary body s energy balance. For objects in the solar system, the relevant weighting of each wavelength is proportional to the solar radiation solar power spectrum . Visible light is a major contribution because over 40 of solar output is in this range. Like most albedo s, the Bond albedo is a value between 0 and 1. Because bodies in the outer solar system are always observed at very low phase angles from the Earth, the only reliable data for measuring their Bond albedo comes from spacecraft. The Bond albedo was originally defined for spherical bodies, but is also applicable for irregular objects. Phase integral The Bond albedo A is related to the geometric albedo p by the expression math A p q frac math where q is termed the phase integral and is given in terms of the directional scattered flux I into phase angle averaged over all wavelengths and azimuthal angles as math q 2 int 0 pi frac I alpha I 0 sin alpha , d alpha. math The phase angle is the angle between the source of the radiation usually the Sun and the observing direction, and varies from zero for light scattered back towards the source, to 180 for observations looking towards the source ... or the new moon have close to 180 . Examples The Bond albedo may be greater or smaller than the geometric ... title ref class wikitable Name Bond albedo Geometric albedo Mercury planet Mercury 0.119 0.138 Venus ... transfer optics ca Albedo de Bond es Albedo de Bond fr Alb do de Bond pt Albedo de Bond simple Bond albedo sl Bondov albedo ... more details
bond hydrolysis and formation , Biopolymers , 45 , 351 353. ref of Thermodynamic free energy free energy , but this process is extremely slow. In living organisms, the process is facilitated by enzyme s. Living organisms also employ enzymes to form peptide bonds this process requires free energy. The wavelength of absorbance for a peptide bond is 190 230 nm. ref Goldfarb AR et al. 1951 ... amide link and peptide link cannot be used interchangeably. File Peptide bond.png thumb Peptide bond File Glycine condensation 2 3D balls.png thumb 180px Glycine condensation A peptide bond amide bond is a covalent chemical bond formed between two molecule s when the carboxyl group of one molecule ... occurs between amino acid s. The resulting C O NH bond is called a peptide bond, and the resulting molecule ... forming an amide A peptide bond can be broken by amide hydrolysis the adding of water . The peptide .... Image Prolyl peptide group resonance.png frame right Figure 3 A hydrogen bond dotted line ... Covalent bond double bond character, estimated at 40 under typical conditions. The peptide group ... bond character can be strengthened or weakened by modifications that favor one resonance form over ... charge. Conversely, donating a hydrogen bond to the amide oxygen or accepting a hydrogen bond from the amide nitrogen should favor the double bonded form, because the hydrogen bond should be stronger ... bond to an amide nitrogen in an X proline Pro peptide bond should favor the single bonded form donating ... nitrogen See Figure 4. Cis trans isomers of the peptide group The partial double bond renders ... makes the cis and trans isomers nearly equal in energy See figure, below . br clear all Image Cis ... bond. Cis and trans isomers are at far left and far right, respectively, separated by the transition ... and math omega 180 circ math for the trans isomer. Amide groups can isomerize about the C N bond ... state s math omega pm 90 circ math requires that the partial double bond be broken, so ... more details
place, causing a change in the orbital energy levels. Image Quintuple bond MO diagram.png center ... 3 sub 2,6 CHMe sub 2 sub sub 2 sub sub 2 sub sub 2 sub A quintuple bond in chemistry is an unusual type of chemical bond first reported in 2005 for a di chromium compound. Single bond s, double bond s, and triple bond s are commonplace in chemistry. Quadruple bond s are rarer but occur especially for Cr ... . In a quintuple bond, ten electrons participate in bonding between the two metal centers, allocated ... pubs.acs.org cen news 83 i39 8339notw1.html Quintuple Bond Makes Its Debut First stable molecule with fivefold ... bond has been analyzed with multireference ab initio and DFT methods, ref http www3.interscience.wiley.com cgi bin fulltext 112604898 PDFSTART Quantum Chemical Study of the Quintuple Bond between ... weakening of the quintuple bond. ref Large Differences in Secondary Metal Arene Interactions in the Transition ... with the R substituent in a bridging position. ref The Many Ways To Have a Quintuple Bond Gabriel ... DOI 10.1021 ja075454b ref In 2005, a quintuple bond was postulated to exist in the hypothetical ... show that the uranium molecule U sub 2 sub has a quintuple bond Laura Gagliardi, Bj rn O. Roos Nature ..., the U sub 2 sub Cl su b 8 p 2 anion. In 2007 the shortest ever metal to metal bond 180.28 pm was reported to exist also in a compound containing a quintuple chromium chromium bond with diazadiene bridging ligands. ref The Shortest Metal Metal Bond Yet Molecular and Electronic Structure ... ref Other metal metal quintuple bond containing complexes that have been reported include quintuply ... Chromium Bond Awal Noor, Frank R. Wagner, and Rhett Kempe Angew. Chem. Int. Ed. Published online ... bonding. Below is a figure of a typical quintuple bond synthesis. Image Quintuple bond synthesis.png center 450px Quintuple Bond Synthesis Dimolybdenum quintuple bonds In 2009 a dimolybdenum compound with a quintuple bond and two diamido bridging ligands was reported with a Mo Mo bond length of 202 ... more details
Kevin Bond may refer to Kevin Bond footballer , former footballer and assistant manager at Tottenham Hotspur Kevin Bond musician Kevin Bond sound engineer , Grammy Award winning sound engineer Hndis Bond, Kevin DEFAULTSORT Bond, Kevin ... more details
Charles Bond may refer to Charles Bond pilot , aviator and member of the American Volunteer Group Charles Grosvenor Bond , United States Representative from New York Chuck Bond , American football player hndis Bond, Charles DEFAULTSORT Bond, Charles ... more details
Multiple issues orphan August 2009 unreferenced August 2009 A synthetic bond is a mixture of investments designed to mimic the cash flow and risk profile of a corporate bond . A synthetic bond can contain items such as bond puts, bond calls, bond futures, Treasuries, money market securities, and CDS . Category Bonds Finance stub ... more details
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