常见化学键的键长与键能

常见化学键的键长与键能常见化学键的键长与键能 各种分子中该类键的平均值 各种分子中该类键的平均值 Bond Lengths and Bond Energies of Commonly Chemical Bonds bond Length pm energy kJ mol Representative C C 154 332 368H3C CH3 C C 134 611 682H2C CH2 C C 120 837 962HC CH C H 109 414 109 4431H CH3 410H CH2CH3 108 3427H CH CH2 105 5523H C CH 392H CH2C CH 356H CH2CH CH2 108 1423H 环环丙基丙基 108 4431H Ph 314H CPh3 310 H 常见化学键的键长与键能常见化学键的键长与键能 各种分子中该类键的平均值 各种分子中该类键的平均值 Bond Lengths and Bond Energies of Commonly Chemical Bonds bond Length pm energy kJ mol Representative C F138452 MeFAlkyl F 133 3 132 8Alkenyl F Aryl F 127Alkynyl F C Cl177339 MeClAlkyl Cl 172 170Alkenyl Cl Aryl Cl 164Alkynyl Cl C Br194284 MeBrAlkyl Br 189 183Alkenyl Br Aryl Br 180Alkynyl Br C I214232 MeIAlkyl I C N147 2331H3C NH2 301H2N CH2Ph 147 5157PhCH2N N CH2Ph 135H2N Ph 132H2N COCH3 C N132644H2C NH C N116937HC N N H101431H NHCH3 335H NHPh 常见化学键的键长与键能常见化学键的键长与键能 各种分子中该类键的平均值 各种分子中该类键的平均值 Bond Lengths and Bond Energies of Commonly Chemical Bonds bond Length pm energy kJ mol Representative C O142 6335MeO CH3 136406H3CO Ac 431HO Ph C O121 5732H2C O 123 5酯中酯中 C O F F140156 9 Cl Cl199242 58 Br Br229193 87 I I266152 55 O O148 H2O2 157MeO OMe O O120498 bond Length pm energy kJ mol Representative N N297H2N NH2 145213H2N NHPh 38HN N2 F H91 7568 6 Cl H127 4431 8 Br H140 8365 7 I H160 9298 7 O H95 8 498 7H OH 97 ROH 436H OEt 469H OAc 368H OPh Cl O272 Br O235 bondbond length pmlength pm energy kJ molenergy kJ mol bondbond length pmlength pm energy kJ molenergy kJ mol B B F F 644644 N N H H 101101 389389 B B O O 515515 N N N N 145145 159159 BrBr BrBr 229229 193193 N NN N 125125 456456 C C B B 156156 393393 N NN N 110110 946946 C C BrBr 194194 276276 N N O O 146146 230230 N ON O 114114 607607 NaNa BrBr 250250 367367 NaNa ClCl 236236 412412 C C ClCl 177177 328328 NaNa F F 193193 519519 C C F F 138138 485485 NaNa H H 189189 186186 NaNa I I 271271 304304 C C I I 214214 240240 O O H H 9898 464464 C C N N 148148 305305 O O O O 148148 146146 C NC N 135135 615615 O OO O 120120 498498 C NC N 116116 891891 P P BrBr 220220 272272 C C O O 143143 326326 P P ClCl 203203 331331 C OC O 120120 728728 P P H H 142142 322322 C O COC O CO2 2 803803 P P O O 163163 410410 C C P P 187187 305305 P OP O 138138 C C S S 182182 272272 P P P P 213213 C SC S 156156 536536 PbPb O O 192192 382382 C S CSC S CS2 2 577577 PbPb S S 239239 346346 C C SiSi 186186 347347 RbRb BrBr 294294 381381 ClCl ClCl 199199 243243 RbRb ClCl 279279 428428 CsCs I I 337337 337337 RbRb F F 227227 494494 RbRb I I 318318 319319 H H H H 7575 436436 S S H H 135135 339339 H H BrBr 142142 366366 S S O O 364364 H H ClCl 127127 431431 S OS O 143143 H H F F 9292 565565 S S S S 207207 268268 H H I I 161161 298298 S SS S 189189 I I I I 266266 151151 SeSe H H 147147 314314 K K BrBr 282282 380380 SeSe SeSe 232232 K K ClCl 267267 433433 Se SeSe Se 215215 K K F F 217217 498498 SiSi ClCl 360360 K K I