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All results from a given calculation for CHOCH(CH3)CH3 (Propanal, 2-methyl-)

using model chemistry: B2PLYP=FULLultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/6-31G*
 hartrees
Energy at 0K-232.192982
Energy at 298.15K 
HF Energy-231.955620
Nuclear repulsion energy175.219552
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B2PLYP=FULLultrafine/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3162 3000 26.20      
2 A' 3153 2992 52.21      
3 A' 3109 2950 5.84      
4 A' 3078 2920 16.65      
5 A' 2913 2763 111.85      
6 A' 1813 1720 150.97      
7 A' 1560 1480 14.50      
8 A' 1554 1474 6.71      
9 A' 1466 1391 1.72      
10 A' 1445 1371 2.86      
11 A' 1347 1277 1.30      
12 A' 1213 1151 0.47      
13 A' 1205 1143 8.61      
14 A' 943 895 18.51      
15 A' 861 817 19.92      
16 A' 549 521 5.80      
17 A' 356 338 7.09      
18 A' 335 318 0.23      
19 A' 236 224 0.83      
20 A" 3161 2999 15.64      
21 A" 3148 2986 3.83      
22 A" 3076 2918 21.65      
23 A" 1541 1462 2.04      
24 A" 1538 1459 0.65      
25 A" 1444 1370 2.67      
26 A" 1380 1309 1.33      
27 A" 1159 1100 0.40      
28 A" 1005 953 0.18      
29 A" 973 924 0.69      
30 A" 952 903 1.00      
31 A" 332 315 0.56      
32 A" 217 206 0.05      
33 A" 63 59 5.24      

Unscaled Zero Point Vibrational Energy (zpe) 25143.5 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 23853.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/6-31G*
ABC
0.25655 0.12360 0.09346

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.298 0.560 2.171
H2 0.298 0.560 -2.171
H3 -1.026 1.369 -1.314
H4 -1.026 1.369 1.314
H5 0.602 2.058 1.277
H6 0.602 2.058 -1.277
C7 0.040 1.120 -1.268
C8 0.040 1.120 1.268
H9 1.420 0.033 0.000
C10 0.364 0.317 0.000
C11 -0.434 -0.972 0.000
H12 -1.538 -0.818 0.000
O13 0.040 -2.087 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.34263.81451.77241.77083.77203.49401.09372.50062.18582.75613.15963.4336
H24.34261.77243.81453.77201.77081.09373.49402.50062.18582.75613.15963.4336
H33.81451.77242.62723.13641.76811.09522.80393.08132.18242.74852.60153.8477
H41.77243.81452.62721.76813.13642.80391.09523.08132.18242.74852.60153.8477
H51.77083.77203.13641.76812.55442.77011.09362.53052.17243.44723.80534.3739
H63.77201.77081.76813.13642.55441.09362.77012.53052.17243.44723.80534.3739
C73.49401.09371.09522.80392.77011.09362.53592.16711.53542.49152.80213.4489
C81.09373.49402.80391.09521.09362.77012.53592.16711.53542.49152.80213.4489
H92.50062.50063.08133.08132.53052.53052.16712.16711.09422.10853.07822.5298
C102.18582.18582.18242.18242.17242.17241.53541.53541.09421.51552.21472.4260
C112.75612.75612.74852.74853.44723.44722.49152.49152.10851.51551.11541.2117
H123.15963.15962.60152.60153.80533.80532.80212.80213.07822.21471.11542.0253
O133.43363.43363.84773.84774.37394.37393.44893.44892.52982.42601.21172.0253

picture of Propanal, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C8 H4 108.142 H1 C8 H5 108.112
H1 C8 C10 111.378 H2 C7 H3 108.142
H2 C7 H6 108.112 H2 C7 C10 111.378
H3 C7 H6 107.764 H3 C7 C10 111.008
H4 C8 H5 107.764 H4 C8 C10 111.008
H5 C8 C10 110.308 H6 C7 C10 110.308
C7 C10 C8 111.337 C7 C10 H9 109.860
C7 C10 C11 109.496 C8 C10 H9 109.860
C8 C10 C11 109.496 H9 C10 C11 106.678
C10 C11 H12 113.795 C10 C11 O13 125.267
H12 C11 O13 120.938
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability