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XIII.F.2. (III.B.7.b.) (IV.C.7.) (XVIII.B.2.)

Bad vibrational frequency predictions

Calculated frequencies that differ from experiment by more than 400 cm-1 or have a ratio with experiment outside of 0.7 to 1.2 are listed

Calculated vibrational frequencies ("theory" in table) are calculated at BLYP/6-311G**
Calculated values were scaled by 0.9961.

Species Name mode Symmetry Experiment Theory difference ratio
C3H4O2 β–Propiolactone 21 A" 113 181 68 0.625
CH3CONH2 Acetamide 20 A 259 152 -107 1.707
CH3COOH Acetic acid 18 A" 93 71 -22 1.310
CH3OH Methyl alcohol 12 A" 200 326 126 0.613
CH3SOCH3 Dimethyl sulfoxide 10 A' 672 556 -116 1.209
C2H6O2S Dimethyl sulfone 13 A2 326 269 -57 1.213
C2H6O2S Dimethyl sulfone 20 B1 262 196 -66 1.336
CH3NH2 methyl amine 14 A" 1195 955 -240 1.252
CHONH2 formamide 12 A" 289 194 -95 1.490
CH3COCl Acetyl Chloride 15 A" 166 135 -31 1.233
CBr2F2 Methane, dibromodifluoro- 3 A1 140 299 159 0.468
C2F6 hexafluoroethane 4 A1u 68 50 -18 1.367
CHOCH(CH3)CH3 Propanal, 2-methyl- 16 A' 632 523 -109 1.209
CHOCH(CH3)CH3 Propanal, 2-methyl- 33 A" 75 61 -14 1.220
C3H6O 2-Propen-1-ol 24 A 188 114 -74 1.649
C3H6O 2-Propen-1-ol 21 A 554 434 -120 1.276
CH3OCHO methyl formate 18 A" 130 87 -43 1.493
C5H12 Pentane 23 A2 131 109 -22 1.206
C4H8O2 1,4-Dioxane 19 Au 288 233 -55 1.239
C2Cl4 Tetrachloroethylene 4 Au 110 90 -20 1.222
C5H8 Cyclopentene 18 A' 254 127 -127 1.995
C3H3NO Isoxazole 14 A" 1033 859 -174 1.203
C2H3N3 1H-1,2,4-Triazole 18 A" 640 530 -110 1.208
C4H4N2 Pyridazine 13 A2 421 350 -71 1.202
C4H6O2 2,3-Butanedione 13 Au 1111 923 -188 1.204
C4H6O2 2,3-Butanedione 21 Bg 240 91 -149 2.651
C4H6O2 2,3-Butanedione 9 Ag 614 495 -119 1.241
C5H12 Propane, 2,2-dimethyl- 12 T1 203 305 102 0.665
C2H3NO3 Oxamic acid 16 A" 984 792 -192 1.243
C2H3NO3 Oxamic acid 18 A" 745 621 -124 1.201
C2H3NO3 Oxamic acid 15 A' 328 259 -69 1.267
C2H3NO3 Oxamic acid 17 A" 815 663 -152 1.230
C2H3NO3 Oxamic acid 21 A" 162 69 -93 2.338
C2H3NO3 Oxamic acid 3 A' 2600 3469 869 0.750
C3H6O Oxetane 23 B2 1228 957 -271 1.283
C5H8 1,4-Pentadiene 31 B 721 594 -127 1.214
C5H8 1,4-Pentadiene 33 B 331 104 -227 3.197
C5H8 1,4-Pentadiene 16 A 137 294 157 0.465
C6H10 1,5-Hexadiene 29 Bg 264 175 -89 1.505
C6H10 1,5-Hexadiene 14 Ag 351 255 -96 1.379
COBr2 Carbonic dibromide 6 B2 512 310 -202 1.653
COBr2 Carbonic dibromide 4 B1 757 483 -274 1.568
CH3SCH2CH3 Ethane, (methylthio)- 18 A' 227 187 -40 1.213
CH3ONO Methyl nitrite 9 A' 627 480 -148 1.308
CH3ONO Methyl nitrite 15 A" 186 117 -69 1.589
C3H6O2 1,3-Dioxolane 5 A 1480 2893 1413 0.512
C3H6O2 1,3-Dioxolane 13 A 658 1219 561 0.540
C3H6O2 1,3-Dioxolane 4 A 1509 2933 1424 0.514
C3H6O2 1,3-Dioxolane 6 A 1361 2821 1460 0.482
C3H7N Cyclopropylamine 12 A' 989 817 -172 1.211
ZnS Zinc sulfide 1 Σ 459 340 -119 1.351
CCl2 dichloromethylene 3 B2 758 614 -144 1.234
C5H8 1,3-Pentadiene, (E)- 32 A" 129 203 74 0.635
C5H8 1,3-Pentadiene, (E)- 31 A" 361 254 -107 1.424
CH3 Methyl radical 2 A2" 606 501 -106 1.211
C4H9N Cyclobutylamine 21 A' 174 133 -41 1.309
SF6 Sulfur Hexafluoride 6 T2u 347 288 -59 1.205
SF6 Sulfur Hexafluoride 1 A1g 774 621 -153 1.246
SF6 Sulfur Hexafluoride 4 T1u 616 511 -104 1.204
SF6 Sulfur Hexafluoride 5 T2g 525 433 -92 1.214
CH2OH Hydroxymethyl radical 9 A 234 442 208 0.530
C6H8 1,3,5-Hexatriene, (Z)- 24 B1 358 103 -255 3.479
C6H8 1,3,5-Hexatriene, (Z)- 11 A1 1136 867 -269 1.311
C6H8 1,3,5-Hexatriene, (Z)- 19 A2 264 153 -111 1.725
SO2F2 Sulfuryl fluoride 9 B2 553 461 -92 1.201
SO2F2 Sulfuryl fluoride 4 A1 385 314 -71 1.226
SO2F2 Sulfuryl fluoride 2 A1 848 695 -153 1.220
SO2F2 Sulfuryl fluoride 5 A2 388 322 -66 1.206
SO2F2 Sulfuryl fluoride 7 B1 539 449 -90 1.200
OH- hydroxide anion 1 Σ 3738 3298 -440 1.133
C4H6 Methylenecyclopropane 17 B1 360 271 -89 1.330
C2Cl2 dichloroacetylene 4 Πg 333 216 -117 1.542
C2Cl2+ dichloroacetylene cation 5 Πu 233 176 -57 1.320
ClFO3 Perchloryl fluoride 3 A1 549 421 -128 1.304
ClFO3 Perchloryl fluoride 5 E 589 470 -119 1.253
ClFO3 Perchloryl fluoride 6 E 405 303 -102 1.337
ClFO3 Perchloryl fluoride 1 A1 1061 861 -200 1.232
ClFO3 Perchloryl fluoride 4 E 1315 1072 -243 1.227
BF3+ boron trifluoride cation 3 E' 1662 1085 -576 1.531
BF3+ boron trifluoride cation 4 E' 411 269 -142 1.531
H2SO4 Sulfuric acid 4 A 831 679 -153 1.225
SOCl2 thionyl chloride 4 A' 194 146 -48 1.329
SOCl2 thionyl chloride 3 A' 344 279 -65 1.234
SOCl2 thionyl chloride 5 A" 455 370 -85 1.230
SOCl2 thionyl chloride 6 A" 284 235 -49 1.210
Cl2 Chlorine diatomic 1 Σg 560 466 -94 1.202
SF4 Sulfur tetrafluoride 6 B1 865 711 -153 1.216
SF4 Sulfur tetrafluoride 3 A1 532 416 -116 1.279
SF4 Sulfur tetrafluoride 7 B1 353 276 -77 1.277
SF4 Sulfur tetrafluoride 4 A1 228 176 -52 1.298
AsF5 Arsenic pentafluoride 1 A1' 734 610 -124 1.203
HSO3F Fluorosulfonic acid 6 A 823 676 -147 1.217
HSO3F Fluorosulfonic acid 8 A 551 454 -97 1.215
HSO3F Fluorosulfonic acid 11 A 390 321 -69 1.213
FNO3 Fluorine nitrate 7 A' 303 246 -57 1.230
FNO3 Fluorine nitrate 6 A' 455 378 -77 1.205
BrF5 bromine pentafluoride 6 B2 281 169 -112 1.665
BrF5 bromine pentafluoride 8 E 415 308 -107 1.348
BrF5 bromine pentafluoride 4 B1 312 253 -59 1.233
BrF5 bromine pentafluoride 3 A1 369 269 -100 1.371
BrF5 bromine pentafluoride 9 E 237 193 -44 1.230
ClF3 Chlorine trifluoride 1 A1 752 579 -173 1.298
ClF3 Chlorine trifluoride 6 B2 442 302 -140 1.465
ClF3 Chlorine trifluoride 3 A1 328 200 -128 1.640
Cl2O Dichlorine monoxide 3 B2 686 475 -211 1.445
SO2Cl2 Sulfuryl chloride 3 A1 408 309 -99 1.322
SO2Cl2 Sulfuryl chloride 6 B1 586 488 -98 1.200
SO2Cl2 Sulfuryl chloride 4 A1 218 169 -49 1.287
SO2Cl2 Sulfuryl chloride 5 A2 282 233 -49 1.211
SO2Cl2 Sulfuryl chloride 7 B1 388 297 -91 1.306
ZnCN Zinc monocyanide 2 Σ 418 339 -79 1.235
ZnCN Zinc monocyanide 3 Π 212 169 -43 1.255
ZnCl Zinc monochloride 1 Σ 391 236 -155 1.657
BrOCl BrOCl 2 A' 560 463 -97 1.209
BrOCl BrOCl 1 A' 676 533 -143 1.268
S2Cl2 Disulfur dichloride 2 A 466 353 -113 1.319
S2Cl2 Disulfur dichloride 5 B 461 340 -121 1.355
NCl3 nitrogen trichloride 3 E 642 459 -183 1.398
PCl5 Phosphorus pentachloride 5 E' 592 468 -124 1.265
PCl5 Phosphorus pentachloride 2 A1' 370 230 -140 1.607
PCl5 Phosphorus pentachloride 1 A1' 395 320 -75 1.232
PCl5 Phosphorus pentachloride 3 A2" 465 366 -99 1.271
PCl5 Phosphorus pentachloride 7 E' 100 75 -25 1.340
OClO Chlorine dioxide 2 A1 448 367 -80 1.219
OClO Chlorine dioxide 3 B2 1110 869 -241 1.278
OClO Chlorine dioxide 1 A1 946 767 -179 1.233
N2O4 Dinitrogen tetroxide 9 B2u 265 178 -87 1.486
N2O3 Dinitrogen trioxide 9 A" 63 138 75 0.457
SCl2 Sulfur dichloride 3 B2 535 413 -122 1.295
CaOH Calcium monohydroxide 2 Σ 353 639 286 0.552
CaOH Calcium monohydroxide 3 Π 609 318 -291 1.912
C4 Carbon tetramer 4 Πg 323 226 -97 1.428
S3- Sulfur trimer anion 3 B2 594 448 -146 1.325
SiH- silicon monohydride anion 1 Σ 2175 1726 -449 1.260
SF2 sulfur difluoride 2 A1 355 287 -68 1.238
ZnH Zinc monohydride 1 Σ 1608 1115 -493 1.442
ClONO2 Chlorine nitrate 7 A' 273 206 -67 1.325
PCl phosphorus chloride 1 Σ 577 475 -102 1.214
BrOBr Bromine oxide 3 B2 629 469 -160 1.341
GeH2 germylene 2 A1 916 1782 866 0.514
GeH2 germylene 1 A1 1856 913 -943 2.033
Al2 Aluminum diatomic 1 Σg 286 234 -52 1.221
ClS2 Sulfur chloride 2 A' 450 336 -114 1.341
ZnCH3 Zinc monomethyl 6 E 315 584 269 0.540
ZnCH3 Zinc monomethyl 3 A1 445 352 -93 1.265
ZnCH2 Zinc methylene 3 A1 514 405 -108 1.267