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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 B1B95/cc-pVDZ
Calculated values were scaled by 0.9612.

Species Name mode Symmetry Experiment Theory difference ratio
C3H4O2 β–Propiolactone 21 A" 113 172 59 0.656
CH3COOH Acetic acid 18 A" 93 76 -17 1.221
CH3OH Methyl alcohol 12 A" 200 323 123 0.619
C2H6O2S Dimethyl sulfone 13 A2 326 263 -63 1.241
C2H6O2S Dimethyl sulfone 20 B1 262 195 -67 1.341
C2H6O2S Dimethyl sulfone 19 B1 396 321 -75 1.235
CH3NH2 methyl amine 14 A" 1195 939 -256 1.272
CHONH2 formamide 12 A" 289 80 -209 3.626
CH3COCl Acetyl Chloride 15 A" 166 137 -29 1.211
CBr2F2 Methane, dibromodifluoro- 3 A1 140 328 188 0.427
C2F6 hexafluoroethane 4 A1u 68 42 -26 1.615
CHOCH(CH3)CH3 Propanal, 2-methyl- 16 A' 632 522 -110 1.211
CHOCH(CH3)CH3 Propanal, 2-methyl- 17 A' 395 324 -71 1.219
CH3COOCH3 methyl acetate 26 A" 136 52 -84 2.614
CH3COOCH3 methyl acetate 27 A" 110 31 -79 3.557
C3H6O 2-Propen-1-ol 22 A 377 307 -70 1.229
C3H6O 2-Propen-1-ol 24 A 188 111 -77 1.697
C3H6O 2-Propen-1-ol 21 A 554 431 -123 1.285
C4H8O Furan, tetrahydro- 33 B 137 69 -68 1.976
CH3CH2CHO Propanal 15 A' 271 224 -47 1.211
CH3CH2CHO Propanal 24 A" 135 80 -55 1.681
C4H8O2 1,4-Dioxane 19 Au 288 237 -51 1.217
C5H8 Cyclopentene 18 A' 254 158 -96 1.610
NH2CN cyanamide 5 A' 408 622 214 0.656
C4H6O2 2,3-Butanedione 13 Au 1111 906 -205 1.227
C4H6O2 2,3-Butanedione 21 Bg 240 148 -92 1.617
C6H4 Benzyne 24 B2 472 371 -101 1.274
C2H3NO3 Oxamic acid 16 A" 984 811 -173 1.213
C2H3NO3 Oxamic acid 18 A" 745 620 -125 1.203
C2H3NO3 Oxamic acid 15 A' 328 252 -76 1.300
C2H3NO3 Oxamic acid 17 A" 815 663 -152 1.229
C2H3NO3 Oxamic acid 21 A" 162 75 -87 2.166
C2H3NO3 Oxamic acid 3 A' 2600 3457 857 0.752
HCNO fulminic acid 5 Π 224 131 -93 1.708
C5H8 1,4-Pentadiene 31 B 721 591 -130 1.219
C5H8 1,4-Pentadiene 33 B 331 101 -230 3.276
C5H8 1,4-Pentadiene 16 A 137 284 147 0.482
C6H10 1,5-Hexadiene 14 Ag 351 248 -103 1.416
COBr2 Carbonic dibromide 6 B2 512 339 -173 1.511
COBr2 Carbonic dibromide 4 B1 757 504 -253 1.503
CH3SSCH3 Disulfide, dimethyl 13 A 117 96 -21 1.217
C3H6O2 1,3-Dioxolane 5 A 1480 2888 1408 0.512
C3H6O2 1,3-Dioxolane 13 A 658 1217 559 0.541
C3H6O2 1,3-Dioxolane 4 A 1509 2927 1418 0.516
C3H6O2 1,3-Dioxolane 6 A 1361 2825 1464 0.482
C6H8 1,3,5-Hexatriene, (E)- 36 Bu 170 140 -30 1.214
NaOH sodium hydroxide 3 Π 300 153 -147 1.960
CH3C(SCH3)HCH3 Propane, 2-(methylthio)- 37 A 215 170 -45 1.263
CH3OCH2CN Methoxyacetonitrile 15 A' 243 173 -70 1.407
CH3OCH2CN Methoxyacetonitrile 24 A" 113 85 -28 1.331
C5H8 1,3-Pentadiene, (E)- 32 A" 129 208 79 0.619
C5H8 1,3-Pentadiene, (E)- 31 A" 361 253 -108 1.429
CH3 Methyl radical 2 A2" 606 423 -184 1.435
CH2OH Hydroxymethyl radical 9 A 234 440 206 0.532
C6H8 1,3,5-Hexatriene, (Z)- 24 B1 358 100 -258 3.587
C6H8 1,3,5-Hexatriene, (Z)- 11 A1 1136 866 -270 1.312
C6H8 1,3,5-Hexatriene, (Z)- 19 A2 264 151 -113 1.752
CHOCHCHCH3 2-Butenal 18 A' 230 184 -46 1.249
C4H6 Methylenecyclopropane 17 B1 360 283 -77 1.273
C2Cl2+ dichloroacetylene cation 5 Πu 233 191 -42 1.218
BF3+ boron trifluoride cation 3 E' 1662 914 -748 1.819
BF3+ boron trifluoride cation 4 E' 411 -116 -527 -3.546
PF5 Phosphorus pentafluoride 7 E' 174 142 -32 1.228
SiF4 Silicon tetrafluoride 2 E 268 223 -45 1.200
AlF3 Aluminum trifluoride 4 E' 263 218 -45 1.205
AsH3+ Arsine cation 2 A1 452 669 217 0.675
BrF5 bromine pentafluoride 6 B2 281 211 -70 1.332
PCl5 Phosphorus pentachloride 2 A1' 370 275 -95 1.343
PCl5 Phosphorus pentachloride 7 E' 100 80 -20 1.245
N2O3 Dinitrogen trioxide 9 A" 63 152 89 0.415
C3 carbon trimer 3 Πu 63 117 53 0.543
SiH- silicon monohydride anion 1 Σ 2175 1736 -439 1.253
FO2 Dioxygen monofluoride 3 A' 376 267 -109 1.407
ClOO chloroperoxy radical 2 A' 414 309 -105 1.340
ClOO chloroperoxy radical 3 A' 201 126 -76 1.602
B2H6 Diborane 14 B2u 368 303 -65 1.216
GeH2 germylene 2 A1 916 1832 916 0.500
GeH2 germylene 1 A1 1856 904 -952 2.054