William Bond may refer to William Bond RFC officer 1889 1917 , World War I fighter ace William Bond bishop 1815 1906 , Canadian archbishop William Cranch Bond 1789 1859 , U.S. astronomer William K. Bond 1792 1864 , U.S. representative for Ohio William S. Bond Medal of Honor 1839 1892 , List of American Civil War Medal of Honor recipients A F Civil War Medal of Honor recipient William Bond Massachusetts 1625 1695 , first Speaker of the Massachusetts Province House of Representatives William D. Bond , inventor and mechanical engineer hndis Bond, William de William Bond ... more details
Bond Head may refer to Francis Bond Head , Lieutenant Governor of Upper Canada during the Rebellion of 1837 Bond Head, Regional Municipality of Durham , Ontario, a village named after the above Bond Head, Simcoe County, Ontario, part of Bradford West Gwillimbury, Ontario disambig Category Place name disambiguation pages ... more details
Francis Bond may refer to Francis Godolphin Bond , rear admiral Francis Bond Head hndis Bond, Francis Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
George Bond may refer to George Bond footballer 1910 1982 , English professional footballer George John Bond 1850 1933 , Canadian Methodist minister and missionary George Phillips Bond 1825 1865 , American astronomer George H. Bond , head coach of the Syracuse college football program, 1894 George Hawkesworth Bond ? 1891 , British MP for East Dorset UK Parliament constituency East Dorset , 1886 1891 George F. Bond 1915 1983 US Navy officer and Father of saturation diving George W. Bond , former President of Louisiana Tech University from 1928 1936 hndis Bond, George ... more details
There have been two Baronetcies created for persons with the surname Bond , both in the Baronetage of Ireland . Both creations are extinct. The Bond Baronetcy , of Peckham in the County of Surrey, was created in the Baronetage of Ireland on 9 October 1658 for Thomas Bond. The title became extinct on the death of the fourth Baronet in 1767. The Bond Baronetcy , of Coolamber in the County of Longford, was created in the Baronetage of Ireland on 21 January 1794 for Sir James Bond, 1st Baronet James Bond , who represented Naas Parliament of Ireland constituency Naas in the Irish House of Commons . The title became extinct on the death of the second Baronet in 1823. Bond Baronets, of Peckham 1658 Sir Thomas Bond, 1st Baronet d. 1685 Sir Henry Bond, 2nd Baronet d. 1721 Sir Thomas Bond, 3rd Baronet 1709 1734 Sir Charles Bond, 4th Baronet 1734 1767 Bond Baronets, of Coolamber 1794 Sir James Bond, 1st Baronet 1744 1820 James Hornby Bond d. 1792 Sir Thomas Bond, 2nd Baronet 1776 1823 References Rayment bt date March 2012 Use dmy dates date March 2012 DEFAULTSORT Bond Category Baronetcies Category Extinct baronetcies ... more details
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 needs not be an integer. A good example of this is bonds between carbon in the molecule benzene , where the delocalized molecular orbital s contain 6 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 1.1, 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 defined as the difference, divided by two, between the number of bonding electron s and the number ... result. Bond order is also an index of bond strength and is also used extensively in valence bond ... 2 math Bond orders of one half can be stable, as shown by the stability of H SUB 2 SUB SUP SUP bond length 106 pm, bond energy 269 kJ mol and He SUB 2 SUB SUP SUP bond length 108 pm, bond energy 251 ... 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 d 1 d ij b right math where math d 1 math is the single bond length, math d ij math is the bond length experimentally ... 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 Chemical bonds DEFAULTSORT Bond Order Category Chemical bond properties ... 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 bond energy 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. Overlap is necessary for the formation of molecular orbitals . This overlap can be calculated and is called the overlap integral . References Reflist Category Chemical bond properties Strength ar ca For a d enlla es Fuerza de enlace ... more details
Exchangeable bond or XB is a type of hybrid security consisting of a straight Bond finance bond and an embedded option to exchange the bond for the stock of a company other than the issuer usually a subsidiary or company in which the issuer owns a stake at some future date and under prescribed conditions. ref http www.presseportal.de pdf.htx?nr 1445534 Successful placement by KfW of exchangeable bonds due 2014, exchangeable into shares of Deutsche Post AG ref An exchangeable bond is different from a convertible bond . A convertible bond gives the holder the option to convert bond into shares of the issuer. The pricing of an exchangeable bond is similar to that of convertible bond, splitting it in straight debt part and an embedded option part and valuing the two separately. Pricing See also Bond option Embedded options Bond option Embedded options , for further detail. Price of exchangeable bond price of straight bond price of option to exchange Price of an exchangeable bond is always higher than the price of a straight bond because the option to exchange adds value to an investor. Yield on an exchangeable bond is lower than the yield on a straight bond. References Reflist External links http www.ebrd.com new pressrel 1998 28june11.htm First Exchangeable Bond in Central and Eastern Europe issued by EBRD http findarticles.com p articles mi qn4158 is 20010323 ai n14368305 Dixons mulls Wanadoo exchangeable bond issue http www.allianz.com en allianz group investor relations bonds bonds page1.html Allianz Bonds and Exchangeable Bonds Bond market state collapsed Corporate finance and investment banking state collapsed Category Fixed income analysis Category Debt Category Commercial bonds ca Bo intercanviable de Umtauschanleihe id Obligasi tukar it Obbligazione exchangeable ... more details
An accrual bond is a fixed interest bond finance bond that is issued at its face value and repaid at the end of the maturity period together with the accrued interest. In Germany , the accrued interest is compounded. In contrast to zero coupon bonds , accrual bonds have a clearly stated coupon rate . See also wiktionary inline Accrual bondBond market Category Bonds Category Articles lacking sources from June 2009 Category All articles lacking sources investment stub ... more details
Unreferenced date November 2006 A global bond is a bond which is issued in several countries at the same time. It is typically issued by large multi national corporation or sovereign entity with a high credit rating. By offering the bond to a large number of investors, a global issuance can reduce borrowing cost. Bond market DEFAULTSORT Global Bond Category Bonds Category Fixed income analysis ... more details
David Bond may refer to David Bond sailor born 1922 , British sailor and Olympic Champion David Bond journalist , British journalist, currently the BBC s Sport Editor David Bond actor hndis Bond, David Short pages monitor This long comment was added to the page to prevent it from being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Long comment. Please do not remove the monitor template without removing the comment as well. ... more details
An Emas bond or sukuk Islamic bond is a non Ringgit denominated Bond finance bond or sukuk issued out of Malaysia . ref cite web url http biz.thestar.com.my news story.asp?file 2009 8 11 business 4493291&sec business title Central Bank Right time for Govt to issue Emas bond publisher The Star Malaysia The Star accessdate 23 September 2011 ref Emas is the Malay word for gold which symbolizes universal value and security. References Reflist Malaysia stub Category Malay words and phrases ... more details
Confusing date March 2012 Orphan date February 2011 A Bond Rider Consent of Surety extends Surety bondbond coverage to assume liabilities for third parties conducting operations for a principal. Bond Riders are utilized by the Government . For Ex http host.159 142 134 67.gsa.gov bgfPortal docDetails.do jsessionid B9D248A821912C369EEA99DBCBF977CF?dId 6708 Surety Consent Forms Another http www.window.state.tx.us taxinfo taxforms 06 110.pdf Bond Rider Form Example displays a form utilized for surety protection as explained herein. Bond Rider s may be utilized for outlining specific type protection i.e., faithful performance, forgery, misplacement, bail, etc. The Deposit insurance General Deposit Insurance Corporation GDIC , just as the Federal Deposit Insurance Corporation FDIC and or other Surety Bond providers provide Surety Bonds on Standard forms assigned numbers i.e. 23, 576, 577, 578, 581, 562, CU 1, CU 1A, and other bond form numbers Additional Bond Rider Examples http www.deq.state.ne.us Publica.nsf 0 576c87a86e8aad54862570cf00711992 FILE 05 175K a3.pdf Bond Rider ftp ftp.consrv.ca.gov pub oil forms Oil 26Gas BONDS OG188.PDF Well Bond Title http archive.gipsa.usda.gov reference library forms psp instructions 20for 20forms P 26SP 2100 i.pdf General Use Rider http www.cbp.gov xp cgov trade trade programs bonds revised bond rider.xml Revised Reconciliation Bond Rider https www.mtgins.com pdf riderform05.pdf Surety Bond Rider Request Form http www.lni.wa.gov formpub Detail.asp?DocID 1516 Pension Bond Rider http www.revenue.ne.gov fuels f 70xn.pdf Motor Fuels Tax Bond Rider https www.montgomerycountymd.gov apps hauler incre decreas.pdf Collector Bond Rider http www.deltaroof.net bond rider.php Contractors Surety Bond Rider Category Bonds ... more details
unreferenced date July 2009 A revolver bond is a financial product, a variant of a regular Bond finance bond or other Security finance debt security . In the example of a regular bond issue, when a corporation purchases a government bond for a notional amount , the government in question agrees to pay interest on that amount to the corporation until the bond maturity. In the case of a revolver bond, while the buyer and seller agree to a notional amount, they also agree that the buyer has the right to draw upon a certain amount of the notional and the seller will only pay interest on this drawn amount, which can be any value up to the original notional. No interest will be paid on the undrawn amount. Category Bonds ... more details
Bond House , Bonds House , or Bonde House may refer to in the United States by state Bonds House Fox, Arkansas , List of RHPs in AR listed on the NRHP in Arkansas Lloyd Bond House , Lloyd, FL, listed on the NRHP in Florida John R. and Mary Bond House , Carnesville, GA, List of RHPs in GA listed on the NRHP in Georgia Bond Family House , Lithonia, GA, List of RHPs in GA listed on the NRHP in Georgia Bond Baker Carter House , Royston, GA, List of RHPs in GA listed on the NRHP in Georgia Bond Sullivan House , Wichita, KS, List of RHPs in KS listed on the NRHP in Kansas J. Roy Bond House , Elizabethtown, KY, List of RHPs in KY listed on the NRHP in Kentucky Jeff Bond House , Red Bush, KY, List of RHPs in KY listed on the NRHP in Kentucky Bonde Farmhouse , Nerstrand, MN, List of RHPs in MN listed on the NRHP in Minnesota Bond House Biloxi, Mississippi , List of RHPs in MS listed on the NRHP in Mississippi Van Reyper Bond House , Montclair, NJ, List of RHPs in NJ listed on the NRHP in New Jersey Frank Bond House , Espanola, NM, List of RHPs in NM listed on the NRHP in New Mexico Col. William M. and Nancy Ralston Bond House , Lockport, NY, List of RHPs in NY listed on the NRHP in New York disambig ... more details
A callable bond also called redeemable bond is a type of bond finance bond debt security that allows the issuer of the bond to retain the privilege of redeeming the bond at some point before the bond reaches its date of maturity. In other words, on the call date s , the issuer has the right, but not the obligation, to buy back the bonds from the bond holders at a defined call price. Technically speaking, the bonds are not really bought and held by the issuer but are instead cancelled immediately. The call price will usually exceed the Par value par or issue price. In certain cases, mainly in the high yield debt market, there can be a substantial call premium. Thus, the issuer has an option finance option , for which it pays in the form of a higher coupon bond coupon rate. If interest rates in the market have gone down by the time of the call date, the issuer will be able to refinance its debt at a cheaper level and so will be incentivized to call the bonds it originally issued. Another ..., it is advantageous to buy the bonds back at par value . With a callable bond, investors have the benefit of a higher coupon bond coupon than they would have had with a straight, non callable bond ... rate. The price behaviour of a callable bond is the opposite of that of puttable bond . Since call option and put option are not mutually exclusive , a bond may have both options embedded. Pricing See also Bond option Embedded options Bond option Embedded options , for further detail. Price of callable bond Price of straight bond Price of call option Price of a callable bond is always lower than the price of a straight bond because the call option adds value to an issuer Yield on a callable bond is higher than the yield on a straight bond. External links http news.morningstar.com classroom2 ... What is a callable bond?? what are its features? http www.investorwords.com 671 callable bond.html Callable Bond Definition Bond market state collapsed Category Bonds Category Options ca ... more details
In chemistry , bond energy E is the measure of bond strength in a chemical bond . It is the heat required to break one Mole unit of molecules into their individual atoms. Ref Frey For example, the carbon hydrogen bond energy 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 4. br Bond energy E should not be confused with bond dissociation energy . br br Bond energy distance correlation Bond strength energy can be directly related to the bond length bond distance. Therefore, we can use the metallic radius , ionic radius , or covalent radius of each atom in the molecule 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 Factors affecting ionic bond energy There are several contributing factors but usually the most important is the difference in the electronegativity of the two atoms bonding together. Ref link See also Nuclear binding energy Electron binding energy Lattice energy References Note Frey Frey, Paul Reheard. http books.google.com books?id Jqy0AAAAIAAJ&q 22energy required to break an Avogadro 22&dq ... B BondEnergy.html Bond Energy. 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 ... more details
Arthur Bond may refer to Arthur J. Bond , American academic Arthur D. Bond 1902 1983 , American football player hndis Bond, Arthur Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
MarsGeo Crater name Bond Crater image Image Argyre Map.JPG 200px caption Map of Argyre quadrangle with major features labeled. Galle crater looks like a smile. location latitude 33.2 N or S S longitude 36 E or W W type dimensions discoverer naming diameter 110.6 km eponym George P. Bond , an American astronomer 1825 1865 Bond Crater is a crater in the Argyre quadrangle on Mars, located at 33.2 south latitude and 36 west longitude. It is 110.6 km in diameter and was named after George P. Bond , an American astronomer 1825 1865 . ref http planetarynames.wr.usgs.gov ref gallery Image Bond Crater Floor.JPG Bond Crater Floor, as seen by HiRISE . gallery References reflist Category Argyre quadrangle Category Impact craters on Mars crater stub Mars stub pt Bond cratera sk Bond kr ter ... more details
Financial markets Bond valuation is the determination of the fair price of a Bond finance bond . As with any security or capital investment, the theoretical fair value of a bond is the present value of the stream of cash flows it is expected to generate. Hence, the value of a bond is obtained by discounting the bond s expected cash flows to the present using an appropriate discount rate . In practice ... exist. Various related yield measures are calculated for the given price. If the bond includes ... from the price of the straight portion. See Bond option Embedded options further under Bond option . This total is then the value of the bond. Bond valuation ref name Fabozzi cite book ... year 1998 edition 3rd isbn 978 1 883249 25 0 ref As above, the fair price of a straight bond a bond with no embedded option s see Bond finance Features Bond finance Features is usually determined by discounting ... the value of a bond, in practice its price is usually determined with reference to other ... Bond option when an option is written on the bond in question stochastic calculus may be employed. Where the market price of bond is less than its face value par value , the bond is selling at a discount . Conversely, if the market price of bond is greater than its face value, the bond is selling at a premium . ref http www.investopedia.com terms a amortizable bond premium.asp ref For this and other relationships relating price and yield, see Bond valuation Yield and price relationships below . Present value approach Below is the formula for calculating a bond s price, which uses the basic ... advancedbond2.asp ref This formula assumes that a coupon payment has just been made see Bond ... interest rate, or required yield, or observed appropriate yield to maturity see Bond valuation Yield to Maturity below M value at maturity, usually equals face value P market price of bond. Relative price approach Under this approach an extension of the above the bond will be priced relative to a benchmark ... more details
tooshort date March 2010 refimprove date March 2010 Brooke Bond is a brand name of tea owned by Unilever , formerly an independent manufacturer in the United Kingdom , known for its PG Tips brand and its Brooke Bond Tea culture Tea cards tea card s. History Brooke Bond & Company was founded by Arthur Brooke entrepreneur Arthur Brooke who was born at 6 George Street, Ashton under Lyne , Lancashire, England in 1845. He opened his first tea shop in 1869 at 23 Market Street, Manchester , Lancashire. There was never a Mr Bond According to current boxes of Brooke Bond Tea, Arthur Brooke chose the name because it was his bond to cutomers to provide a quality tea hence Brooke Bond. In the 1950s and 1960s, packets of Brooke Bond tea included illustrated tea cards, usually 50 in a series, which were collected by many children. One of the most famous illustrators of these cards was Charles Tunnicliffe ... 8&ref brooke bond wiki London Cigarette Card Company The most famous brand of Brooke Bond was PG Tips ... Brooke Bond Liebig , which was acquired by Unilever in 1984. The Brooke Bond name has since been significantly decreased by Unilever, however it is possible to still buy boxes of Brooke Bond Tea Co ... is licensed by Unilever to use the Brooke Bond name for the Brooke Bond D and Brooke Bond Choicest brands ... Ltd publisher Globaltea.com date accessdate 2010 01 06 ref The Brooke Bond brand is still used in other countries, especially in India . In Pakistan , Brooke Bond Supreme is the number one selling tea brand. Unilever markets it as being stronger than its Lipton Yellow Label blend. The Brooke Bond ... Brooke Bond Collectables http www.thegrocer.co.uk articles.aspx?page articles&ID 192354 The Grocer Brooke Bond returns to the British Market Unilever Category Unilever brands ... Companies based in Manchester Category English brands food company stub fr Brooke Bond ru Brooke Bond uk Brooke Bond ... more details
File 3D model hydrogen bonds in water.svg right thumb 225px Model of polar bonds between molecules of water. In chemistry , a polar bond is a type of covalent bond between two atoms or more in which electrons are shared unequally. Because of this, one end of the molecule has a slight, relative negative charge and the other a slight, relative positive charge. An example of atoms bonded by a polar bond is the water molecule , which is made up of two hydrogen atoms and one oxygen atom. See Also Chemical properties Covalent bond Bond dipole moment Partial charge Dipoles Molecular dipoles Molecular dipole Electronegativity Category Chemical bonding simple Polar bond uk ... more details
Globalize date September 2010 A bond fund is a collective investment scheme that invests in Bond finance ... Commission on Bond Funds ref Bond funds typically pay periodic dividends that include interest payments on the fund s underlying securities plus periodic realized capital appreciation. Bond funds ... bond funds pay out dividends more frequently than individual bonds. ref name cnn http money.cnn.com pf 101 lessons 7 page3.html CNN Money 101 Types of Bonds ref Types Bond Funds can be classified by their primary ... at maturity. Some bond funds specialize in high yield securities junk bonds , which are corporate bonds carrying a higher risk, due to the potential inability of the issuer to repay the bond. Bond ... other bond funds, with the dividend return correlating approximately with the risk. Municipal Bonds ... taxes. Bond funds may also be classified by factors such as type of yield high income or term short, medium, long or some other specialty such as zero coupon bond s, international bonds, multisector ... incinv 6587.html Calvert Bond Fund Basics ref Fund managers provide dedicated management ..., coupon rate, yield, and countless other factors that affect bond investing. Diversification Bond ... an underperforming bond is just one of many bonds in a fund, its negative impact on an investor ... shares in a bond fund at any time without regard to bond maturities. Disadvantages over individual bonds Fees Bond funds typically charge a fee, often as a percentage of the total investment amount. This fee is not applicable to individually held bonds. Variable Dividends Bond fund dividend payments may not be fixed as with the interest payents of an individually held bond, leading to potential fluctuation of the value of dividend payments. Variable NAV The Net Asset Value NAV of a bond fund may change over time, unlike an individual bond in which the total issue price will be returned upon maturity provided the bond issuer does not default . Total Return Price charts on bond funds typically ... 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 ... bond a U&minus U bond, in the molecule uranium U sub 2 sub . ref cite journal last Gagliardi first ... has a quintuple bond journal Nature year 2005 volume 433 pages 848 851 doi 10.1038 nature03249 url http archive ouverte.unige.ch unige 3652 ref 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 F.A. Cotton and Geoffrey ... 124 references chemical bonds DEFAULTSORT Delta Bond Category Chemical bonding es Enlace fa ... more details
Image Electron orbitals.svg right thumb 350px Electron atomic and molecular orbitals, showing a pi bond at the bottom right of the picture. In chemistry , pi bonds bonds are covalent bond covalent chemical bond s where two lobes of one involved atomic orbital overlap two lobes of the other involved ... atomic nucleus nuclei . Image Pi Bond.svg thumb left Two p orbitals forming a bond. The Greek letter in their name refers to p orbital s, since the orbital symmetry of the pi bond is the same as that of the p orbital when seen down the bond axis. P orbitals usually engage in this sort of bonding. D orbitals also engage in pi bonding, and form part of the basis for quintuple bond metal metal multiple bonding . Pi bonds are usually weaker than sigma bond s. From the perspective of quantum mechanics , this bond s weakness is explained by significantly less overlap between the component ... bond cannot rotate about that bond without breaking the pi bond, because rotation involves destroying ... of an additional nodal plane between these two bonded atoms. Multiple bonds A typical double bond consists of one sigma bond and one pi bond, for example the C C double bond in ethylene . A typical triple bond , for example in acetylene , consists of one sigma bond and two pi bonds in two mutually perpendicular planes containing the bond axis. Two pi bonds are the maximum that can exist between a given pair of atoms. Quadruple bond s are extremely rare and can be formed only between transition metal atoms, and consist of one sigma bond, two pi bonds and one delta bond . A pi bond is weaker than a sigma bond, but the combination of pi and sigma bond is stronger than either bond by itself. The enhanced strength of a multiple bond versus a single sigma bond is indicated in many ways, but most obviously by a contraction in bond lengths. For example in organic chemistry, carbon carbon bond ... the total bond shorter and stronger. align center class wikitable center File Ethane staggered CRC ... more details
Encyclopedia
top
