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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 B1B95/6-311G**
Calculated values were scaled by 0.9601.

Species Name mode Symmetry Experiment Theory difference ratio
C3H4O2 β–Propiolactone 21 A" 113 172 59 0.658
CH3CONH2 Acetamide 20 A 259 193 -65 1.338
CH3OH Methyl alcohol 12 A" 200 318 118 0.628
C2H6O2S Dimethyl sulfone 20 B1 262 203 -59 1.292
CH3NH2 methyl amine 14 A" 1195 940 -255 1.272
CHONH2 formamide 12 A" 289 216 -73 1.336
CH3CHClCH3 Propane, 2-chloro- 27 A" 276 229 -47 1.204
CH3COCl Acetyl Chloride 15 A" 166 135 -31 1.229
CBr2F2 Methane, dibromodifluoro- 3 A1 140 329 189 0.426
C2F6 hexafluoroethane 4 A1u 68 52 -16 1.306
CHOCH(CH3)CH3 Propanal, 2-methyl- 16 A' 632 522 -110 1.210
CHOCH(CH3)CH3 Propanal, 2-methyl- 17 A' 395 324 -71 1.219
CHOCH(CH3)CH3 Propanal, 2-methyl- 33 A" 75 61 -14 1.224
CH3COOCH3 methyl acetate 26 A" 136 88 -48 1.540
CH3COOCH3 methyl acetate 27 A" 110 43 -67 2.552
C6H4O2 parabenzoquinone 30 B3u 109 88 -21 1.233
C3H6O 2-Propen-1-ol 22 A 377 310 -67 1.217
C3H6O 2-Propen-1-ol 24 A 188 113 -75 1.661
C3H6O 2-Propen-1-ol 21 A 554 430 -124 1.288
C5H12 Pentane 23 A2 131 105 -26 1.246
C4H8O Furan, tetrahydro- 33 B 137 65 -72 2.114
CH2C(CH3)CH3 1-Propene, 2-methyl- 15 A2 193 154 -39 1.254
CH3CH2CHO Propanal 24 A" 135 110 -25 1.233
C4H8O2 1,4-Dioxane 19 Au 288 235 -53 1.223
C5H8 Cyclopentene 18 A' 254 155 -99 1.642
C4H6O2 2,3-Butanedione 13 Au 1111 911 -200 1.219
C4H6O2 2,3-Butanedione 21 Bg 240 106 -134 2.262
C4H6O2 2,3-Butanedione 9 Ag 614 510 -104 1.204
C6H4 Benzyne 24 B2 472 387 -85 1.219
C5H12 Propane, 2,2-dimethyl- 12 T1 203 295 92 0.689
C2H3NO3 Oxamic acid 16 A" 984 807 -177 1.219
C2H3NO3 Oxamic acid 18 A" 745 613 -132 1.215
C2H3NO3 Oxamic acid 15 A' 328 252 -76 1.301
C2H3NO3 Oxamic acid 17 A" 815 658 -157 1.238
C2H3NO3 Oxamic acid 21 A" 162 72 -90 2.243
C2H3NO3 Oxamic acid 3 A' 2600 3471 871 0.749
C5H8 1,4-Pentadiene 31 B 721 592 -129 1.219
C5H8 1,4-Pentadiene 33 B 331 100 -231 3.320
C5H8 1,4-Pentadiene 16 A 137 285 148 0.480
C6H10 1,5-Hexadiene 29 Bg 264 209 -55 1.265
C6H10 1,5-Hexadiene 14 Ag 351 265 -86 1.323
COBr2 Carbonic dibromide 6 B2 512 341 -171 1.500
COBr2 Carbonic dibromide 4 B1 757 504 -253 1.502
C3H6O2 1,3-Dioxolane 5 A 1480 2887 1407 0.513
C3H6O2 1,3-Dioxolane 4 A 1509 2927 1418 0.516
C3H6O2 1,3-Dioxolane 6 A 1361 2832 1471 0.481
C3H6O2 1,3-Dioxolane 13 A 658 1229 571 0.535
C3H7N Cyclopropylamine 12 A' 989 817 -172 1.210
C6H8 1,3,5-Hexatriene, (E)- 36 Bu 170 139 -31 1.219
NaOH sodium hydroxide 3 Π 300 121 -179 2.478
ZnS Zinc sulfide 1 Σ 459 354 -105 1.295
CH3OCH2CN Methoxyacetonitrile 15 A' 243 174 -69 1.396
CH3OCH2CN Methoxyacetonitrile 24 A" 113 84 -29 1.342
C5H8 1,3-Pentadiene, (E)- 32 A" 129 203 74 0.636
C5H8 1,3-Pentadiene, (E)- 31 A" 361 250 -111 1.443
CH3 Methyl radical 2 A2" 606 460 -147 1.320
CH2OH Hydroxymethyl radical 9 A 234 433 199 0.541
C6H8 1,3,5-Hexatriene, (Z)- 24 B1 358 98 -260 3.639
C6H8 1,3,5-Hexatriene, (Z)- 11 A1 1136 863 -273 1.317
C6H8 1,3,5-Hexatriene, (Z)- 19 A2 264 145 -119 1.816
CHOCHCHCH3 2-Butenal 18 A' 230 190 -40 1.212
C4H6 Methylenecyclopropane 17 B1 360 281 -79 1.282
C2Cl2+ dichloroacetylene cation 5 Πu 233 189 -44 1.235
BF3+ boron trifluoride cation 3 E' 1662 925 -737 1.796
BF3+ boron trifluoride cation 4 E' 411 -133 -544 -3.094
BrF5 bromine pentafluoride 6 B2 281 206 -75 1.361
ZnCl Zinc monochloride 1 Σ 391 264 -127 1.482
PCl5 Phosphorus pentachloride 2 A1' 370 261 -109 1.418
N2O3 Dinitrogen trioxide 9 A" 63 149 86 0.424
SiH- silicon monohydride anion 1 Σ 2175 1762 -413 1.235
H3O+ hydronium 2 A1 954 758 -197 1.259
ZnH Zinc monohydride 1 Σ 1608 1147 -461 1.402
FO2 Dioxygen monofluoride 3 A' 376 217 -159 1.733
FO2 Dioxygen monofluoride 2 A' 579 405 -175 1.432
ClOO chloroperoxy radical 2 A' 414 290 -123 1.424
ClOO chloroperoxy radical 3 A' 201 132 -69 1.524
GeH2 germylene 2 A1 916 1839 923 0.498
GeH2 germylene 1 A1 1856 907 -949 2.045
ZnCH3 Zinc monomethyl 6 E 315 578 263 0.545