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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 B3PW91/6-311G*
Calculated values were scaled by 0.9627.

Species Name mode Symmetry Experiment Theory difference ratio
C3H4O2 β–Propiolactone 21 A" 113 177 64 0.638
CH3CONH2 Acetamide 20 A 259 199 -60 1.299
CH3COOH Acetic acid 18 A" 93 67 -26 1.384
CH3OH Methyl alcohol 12 A" 200 344 144 0.582
C2H6O2S Dimethyl sulfone 20 B1 262 210 -52 1.246
CH3CCl3 Ethane, 1,1,1-trichloro- 6 A2 214 312 98 0.686
CH3NH2 methyl amine 14 A" 1195 952 -243 1.256
CHONH2 formamide 12 A" 289 215 -74 1.344
CH3COCl Acetyl Chloride 15 A" 166 135 -31 1.228
CBr2F2 Methane, dibromodifluoro- 3 A1 140 324 184 0.433
C2F6 hexafluoroethane 4 A1u 68 56 -12 1.222
CH3COOCH3 methyl acetate 27 A" 110 29 -81 3.838
C6H4O2 parabenzoquinone 30 B3u 109 90 -19 1.208
C3H6O 2-Propen-1-ol 24 A 188 114 -74 1.651
C3H6O 2-Propen-1-ol 21 A 554 434 -120 1.276
C5H12 Pentane 23 A2 131 107 -24 1.229
C4H8O Furan, tetrahydro- 33 B 137 48 -89 2.843
CH2C(CH3)CH3 1-Propene, 2-methyl- 15 A2 193 154 -39 1.254
C4H8O2 1,4-Dioxane 19 Au 288 235 -53 1.224
C5H8 Cyclopentene 18 A' 254 144 -110 1.768
C4H6O2 2,3-Butanedione 13 Au 1111 924 -187 1.203
C4H6O2 2,3-Butanedione 21 Bg 240 102 -138 2.348
C4H6O2 2,3-Butanedione 9 Ag 614 506 -108 1.213
C5H12 Propane, 2,2-dimethyl- 12 T1 203 308 105 0.658
C2H3NO3 Oxamic acid 16 A" 984 814 -170 1.208
C2H3NO3 Oxamic acid 15 A' 328 259 -69 1.266
C2H3NO3 Oxamic acid 17 A" 815 679 -136 1.201
C2H3NO3 Oxamic acid 21 A" 162 70 -92 2.309
C2H3NO3 Oxamic acid 3 A' 2600 3484 884 0.746
C3H6O Oxetane 23 B2 1228 1021 -207 1.203
C3H6O Oxetane 12 A2 986 817 -169 1.206
HCNO fulminic acid 5 Π 224 154 -70 1.458
C5H8 1,4-Pentadiene 31 B 721 590 -131 1.221
C5H8 1,4-Pentadiene 33 B 331 101 -230 3.287
C5H8 1,4-Pentadiene 16 A 137 289 152 0.473
C6H10 1,5-Hexadiene 29 Bg 264 189 -75 1.395
C6H10 1,5-Hexadiene 14 Ag 351 255 -96 1.379
COBr2 Carbonic dibromide 6 B2 512 337 -175 1.519
COBr2 Carbonic dibromide 4 B1 757 503 -254 1.505
CH3SCH2CH3 Ethane, (methylthio)- 18 A' 227 188 -39 1.210
CH3ONO Methyl nitrite 15 A" 186 110 -76 1.697
CH3SSCH3 Disulfide, dimethyl 13 A 117 96 -21 1.223
C3H6O2 1,3-Dioxolane 5 A 1480 2893 1413 0.512
C3H6O2 1,3-Dioxolane 13 A 658 1238 580 0.532
C3H6O2 1,3-Dioxolane 4 A 1509 2931 1422 0.515
C3H6O2 1,3-Dioxolane 6 A 1361 2841 1480 0.479
NaOH sodium hydroxide 3 Π 300 53 -247 5.645
ZnS Zinc sulfide 1 Σ 459 354 -105 1.298
C5H8 1,3-Pentadiene, (Z)- 22 A' 144 207 63 0.696
C5H8 1,3-Pentadiene, (Z)- 32 A" 171 137 -34 1.249
C5H8 1,3-Pentadiene, (Z)- 31 A" 456 345 -111 1.323
C5H8 1,3-Pentadiene, (E)- 32 A" 129 200 71 0.646
C5H8 1,3-Pentadiene, (E)- 31 A" 361 249 -112 1.449
CH3 Methyl radical 2 A2" 606 451 -155 1.343
C6H8 1,3,5-Hexatriene, (Z)- 24 B1 358 98 -260 3.636
C6H8 1,3,5-Hexatriene, (Z)- 11 A1 1136 867 -269 1.311
C6H8 1,3,5-Hexatriene, (Z)- 19 A2 264 146 -118 1.810
C3H3 Propargyl radical 7 B1 490 407 -83 1.205
OH- hydroxide anion 1 Σ 3738 3330 -409 1.123
C4H6 Methylenecyclopropane 17 B1 360 278 -82 1.293
C2Cl2+ dichloroacetylene cation 5 Πu 233 184 -49 1.270
BF3+ boron trifluoride cation 4 E' 411 53 -358 7.685
BF3+ boron trifluoride cation 3 E' 1662 953 -709 1.743
AsH3+ Arsine cation 2 A1 452 690 238 0.655
BrF5 bromine pentafluoride 6 B2 281 202 -79 1.390
CaF2 Calcium difluoride 2 A1 120 80 -40 1.508
ZnCl Zinc monochloride 1 Σ 391 266 -125 1.469
PCl5 Phosphorus pentachloride 2 A1' 370 256 -114 1.447
N2O3 Dinitrogen trioxide 9 A" 63 144 81 0.439
CaOH Calcium monohydroxide 2 Σ 353 638 285 0.554
CaOH Calcium monohydroxide 3 Π 609 375 -234 1.625
SiH- silicon monohydride anion 1 Σ 2175 1724 -451 1.261
H3O+ hydronium 2 A1 954 684 -270 1.395
ZnH Zinc monohydride 1 Σ 1608 1105 -502 1.454
FO2 Dioxygen monofluoride 3 A' 376 154 -222 2.447
FO2 Dioxygen monofluoride 2 A' 579 432 -147 1.341
ClOO chloroperoxy radical 2 A' 414 301 -113 1.375
ClOO chloroperoxy radical 3 A' 201 130 -71 1.546
GeH2 germylene 2 A1 916 1814 898 0.505
GeH2 germylene 1 A1 1856 913 -943 2.033
Mg2 Magnesium diatomic 1 Σg 51 82 31 0.622
ZnCH3 Zinc monomethyl 6 E 315 600 285 0.525