Bond-dissociation enthalpies in polyatomic molecules 3.7.4



	You are here:		Chapter: 3 Chemistry Section: 3.7 Properties of chemical bonds SubSection: 3.7.4 Bond-dissociation enthalpies in polyatomic molecules

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3.7.4 Bond-dissociation enthalpies in polyatomic molecules

The values have been selected from those listed by T. L. Cottrell, The Strengths of Chemical Bonds, 2nd edn, 1958 (Butterworth, London); V. I. Vedeneyev, L. V. Gurvich, V. N. Kondrat′yev, V. A. Medvedev, and Y. L. Frankevich, Bond Energies, Ionization Potentials and Electron Affinities, 1966 (Edward Arnold, London); and the references cited in J. A. Kerr and A. F. Trotman-Dickenson, Handbook of Chemistry and Physics, 50th edn, 1969/70 (The Chemical Rubber Co., Cleveland, Ohio).

X—Y	D(X—Y)	X—Y	D(X—Y)	X—Y	D(X—Y)
X—Y	kJ · mol⁻¹	X—Y	kJ · mol⁻¹	X—Y	kJ · mol⁻¹

CH—H	448	CF₃—CF₃	406	(CH₃)₂CH—Cl	339
CH₂—H	439	CH₃—CF₃	418	CF₃—Cl	356
CH₃—H	435	CH₃—CHO	314	CCl₃—Cl	305
C₂H₅—H	435	CH₃—CN	431	CH₃—Br	293
(CH₃)₂CH—H	395	NC—CN	607	(CH₃)₂CH—Br	285
C₆H₅—H	469	CH₃—NH₂	335	C₆H₅—Br	335
C₆H₅CH₂—H	356	C₆H₅—NH₂	418	CF₃—Br	293
CCl₃—H	401	CH₃—OH	377	CCl₃—Br	226
CF₃—H	444	C₆H₅—OH	469	CH₃—I	234
CH₃NH—H	385	CH₃—OCH₃	335	(CH₃)₂CH—I	222
(CH₃)₂N—H	360	C₆H₅—OCH₃	423	C₆H₅—I	272
C₆H₅NH—H	335	(CH₃)₂CH—OCH₃	347	O₂N—NO	40
NH₂—H	427	CH₃—SH	368	O₂N—NO₂	57
OH—H	492	CH₃—F	452	COO	531
SH—H	377	(CH₃)₂CH—F	439	HO—OH	213
HCCH	962	C₆H₅—F	523	CH₃O—OCH₃	151
H₂CCH₂	699	CF₃—F	540	F₃PO	544
F₂CCF₂	319	CCl₂—F	444	Cl₃PO	510
CH₃—CH₃	368	CH₃—Cl	352	Br₃PO	498

M.L.McGlashan

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