键能表

D

r D

r (kJ/mol)

(pm)

(kJ/mol)

(pm)

C-C 346154H-H 43274C=C 602134H-B 389119C≡C 835120H-C 411109C-Si 318185H-Si 318148C-Ge 238195H-Ge 288153C-Sn 192216H-Sn 251170C-Pb 130230H-N 386101C-N 305147H-P 322144C=N 615129H-As 247152C≡N 887116H-O 45996C-P 264184H-S 363134C-O 358143H-Se 276146C=O 799120H-Te 238170C≡O 1072113H-F 56592C-B 356H-Cl 428127C-S 272182H-Br 362141C=S 573160H-I

295

161

C-F 485135C-Cl 327177C-Br 285194C-I 213

214

D r D r (kJ/mol)

(pm)

(kJ/mol)

(pm)

O-O 142148F-F 155142O=O 494121Cl-Cl 240199O-F 190142Br-Br 190228S=O 522143I-I 148267

S-S (S 8)226205At-At 116S=S 425149I-O 201S-F

284156I-F 273191S-Cl 255207I-Cl 208232

Se-Se 172I-Br

175

Se=Se

272

215

Bond Bond

Bond Bond

D

r D

r (kJ/mol)

(pm)

(kJ/mol)

(pm)

N-N 167145Si-Si 222233N=N 418125Si-N 355N≡N 942110Si-O 452163N-O 201140Si-S 293200N=O 607121Si-F 565160N-F 283136Si-Cl 381202N-Cl 313175Si-Br 310215P-P 201221Si-I 234243P-O 335163Ge-Ge 188241P=O 544150Ge-N 257P=S 335186Ge-F 470168P-F 490154Ge-Cl 349210P-Cl 326203

Ge-Br 276230

P-Br 264Ge-I 212P-I 184Sn-F

414As-As 146243Sn-Cl 323233As-O 301178Sn-Br 273250As-F 484171Sn-I 205270As-Cl 322216Pb-F 331As-Br 458233Pb-Cl 243242As-I 200254

Pb-Br 201Sb-Sb 121Pb-I

142

279

Sb-F 440Sb-Cl (SbCl 5)248Sb-Cl (SbCl 3)

315

232

D r (kJ/mol)

(pm)

D r B-B 293(kJ/mol)

(pm)

B-O 536Kr-F (KrF 2)50190B-F 613Xe-O 84175B-Cl 456175

Xe-F

130

195

B-Br

377

Bond Bond

Bond Bond