常见化学键的键长与键能

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1、常见化学键的键长与键能（各种分子中该类键的平均值）BondLengthsandBondEnergiesofCommonlyChemicalBondsbondLength/pmenergy/(kJ/molRepresentativeC-C154332368H3C-CH3C=C134611682H2C=CH2C≡C120837962HC≡CHC-H109414109.4431H-CH3410H-CH2CH3108.3427H-CH=CH2105.5523H-C≡CH392H-CH2C≡CH356H-CH2CH=CH2108.1423H-环丙基108.4431H-Ph31

2、4H-CPh3310常见化学键的键长与键能（各种分子中该类键的平均值）BondLengthsandBondEnergiesofCommonlyChemicalBondsbondLength/pmenergy/(kJ/molRepresentativeC-F138452MeFAlkyl-F133.3/132.8Alkenyl-F/Aryl-F127Alkynyl-FC-Cl177339MeClAlkyl-Cl172/170Alkenyl-Cl/Aryl-Cl164Alkynyl-ClC-Br194284MeBrAlkyl-Br189/183Alkenyl-Br/Ary

3、l-Br180Alkynyl-BrC-I214232MeIAlkyl-IC-N147.2331H3C-NH2301H2N-CH2Ph147.5157PhCH2N=N-CH2Ph135H2N-Ph132H2N-COCH3C=N132644H2C=NHC≡N116937HC≡NN-H101431H-NHCH3335H-NHPh常见化学键的键长与键能（各种分子中该类键的平均值）BondLengthsandBondEnergiesofCommonlyChemicalBondsbondLength/pmenergy/(kJ/molRepresentativeC-O142.63

4、35MeO-CH3136406H3CO-Ac431HO-PhC=O121.5732H2C=O123.5酯中C=OF-F140156.9Cl-Cl199242.58Br-Br229193.87I-I266152.55O-O148(H2O2)157MeO-OMeO=O120498bondLength/pmenergy/(kJ/molRepresentativeN-N297H2N-NH2145213H2N-NHPh38HN-N2F-H91.7568.6Cl-H127.4431.8Br-H140.8365.7I-H160.9298.7O-H95.8()498.7H-OH97

5、(ROH)436H-OEt469H-OAc368H-OPhCl-O272Br-O235bondlength/pmenergy/(kJ/molbondlength/pmenergy/(kJ/molB—F-644N—H101389B—O-515N—N145159Br—Br229193N═N125456C—B156393N≡N110946C—Br194276N—O146230N═O114607Na—Br250367Na—Cl236412C—Cl177328Na—F193519C—F138485Na—H189186Na—I271304C—I214240O—H98464C—N

6、148305O—O148146C═N135615O═O120498C≡N116891P—Br220272C—O143326P—Cl203331C═O120728P—H142322C═O(CO2)-803P—O163410C—P187305P═O138-C—S182272P—P-213C═S156536Pb—O192382C═S(CS2)-577Pb—S239346C—Si186347Rb—Br294381Cl—Cl199243Rb—Cl279428Cs—I337337Rb—F227494Rb—I318319H—H75436S—H135339H—Br142366S—O

7、-364H—Cl127431S═O143-H—F92565S—S207268H—I161298S═S189-I—I266151Se—H147314K—Br282380Se—Se232-K—Cl267433Se═Se215-K—F217498Si—Cl-360K—I305325Si—F-552Li—Cl202469Si—H-377Li—H239238Si—O-460Li—I238345Si—Si-176