return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-232.488420
Energy at 298.15K-232.496765
HF Energy-232.488420
Nuclear repulsion energy175.116012
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 TPSSh/6-31G(2df,p)
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' 3114 3005 27.41      
2 A' 3104 2996 59.91      
3 A' 3067 2960 4.54      
4 A' 3029 2923 20.28      
5 A' 2824 2725 119.80      
6 A' 1816 1752 178.03      
7 A' 1523 1469 10.88      
8 A' 1514 1461 5.75      
9 A' 1430 1380 0.60      
10 A' 1413 1364 3.41      
11 A' 1308 1262 1.60      
12 A' 1182 1141 2.73      
13 A' 1174 1133 8.30      
14 A' 915 883 18.30      
15 A' 836 807 20.20      
16 A' 533 514 5.31      
17 A' 333 321 6.46      
18 A' 318 306 0.18      
19 A' 222 214 0.98      
20 A" 3113 3004 19.80      
21 A" 3098 2989 2.50      
22 A" 3027 2921 25.71      
23 A" 1501 1449 1.05      
24 A" 1499 1447 0.59      
25 A" 1399 1350 0.63      
26 A" 1342 1295 2.15      
27 A" 1132 1093 0.52      
28 A" 983 949 0.14      
29 A" 951 917 0.27      
30 A" 924 891 1.16      
31 A" 313 302 0.54      
32 A" 205 198 0.06      
33 A" 69 66 4.43      

Unscaled Zero Point Vibrational Energy (zpe) 24604.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23742.9 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 TPSSh/6-31G(2df,p)
ABC
0.25591 0.12346 0.09331

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.316 0.569 2.174
H2 0.316 0.569 -2.174
H3 -1.034 1.344 -1.324
H4 -1.034 1.344 1.324
H5 0.579 2.071 1.267
H6 0.579 2.071 -1.267
C7 0.038 1.119 -1.270
C8 0.038 1.119 1.270
H9 1.428 0.037 0.000
C10 0.370 0.316 0.000
C11 -0.430 -0.972 0.000
H12 -1.537 -0.817 0.000
O13 0.038 -2.086 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.34753.82831.77391.77373.76383.49821.09432.49912.18912.76703.17493.4425
H24.34751.77393.82833.76381.77371.09433.49822.49912.18912.76703.17493.4425
H33.82831.77392.64733.13731.76991.09652.81523.08622.18632.73502.58343.8294
H41.77393.82832.64731.76993.13732.81521.09653.08622.18632.73502.58343.8294
H51.77373.76383.13731.76992.53472.76321.09482.54292.17493.44703.79754.3791
H63.76381.77371.76993.13732.53471.09482.76322.54292.17493.44703.79754.3791
C73.49821.09431.09652.81522.76321.09482.53942.17201.53872.49062.79993.4473
C81.09433.49822.81521.09651.09482.76322.53942.17201.53872.49062.79993.4473
H92.49912.49913.08623.08622.54292.54292.17202.17201.09482.11443.08562.5374
C102.18912.18912.18632.18632.17492.17491.53871.53871.09481.51582.21762.4244
C112.76702.76702.73502.73503.44703.44702.49062.49062.11441.51581.11751.2082
H123.17493.17492.58342.58343.79753.79752.79992.79993.08562.21761.11752.0223
O133.44253.44253.82943.82944.37914.37913.44733.44732.53742.42441.20822.0223

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 108.134 H1 C8 H5 108.245
H1 C8 C10 111.369 H2 C7 H3 108.134
H2 C7 H6 108.245 H2 C7 C10 111.369
H3 C7 H6 107.745 H3 C7 C10 111.011
H4 C8 H5 107.745 H4 C8 C10 111.011
H5 C8 C10 110.212 H6 C7 C10 110.212
C7 C10 C8 111.213 C7 C10 H9 109.982
C7 C10 C11 109.247 C8 C10 H9 109.982
C8 C10 C11 109.247 H9 C10 C11 107.073
C10 C11 H12 113.874 C10 C11 O13 125.370
H12 C11 O13 120.756
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability