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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-473.580317
Energy at 298.15K-473.584160
HF Energy-473.273820
Nuclear repulsion energy92.287546
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 MP2/3-21G*
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' 3185 3029 7.97      
2 A' 3128 2976 15.98      
3 A' 3071 2922 2.73      
4 A' 1580 1503 6.33      
5 A' 1482 1410 10.51      
6 A' 1447 1377 35.83      
7 A' 1185 1127 23.04      
8 A' 1132 1076 0.75      
9 A' 837 797 3.28      
10 A' 413 393 1.03      
11 A" 3131 2979 7.67      
12 A" 1577 1500 10.77      
13 A" 1116 1061 2.30      
14 A" 799 760 22.15      
15 A" 164 156 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 12123.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 11532.8 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 MP2/3-21G*
ABC
1.59806 0.18884 0.17441

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.630 0.000
C2 -1.516 0.690 0.000
S3 0.892 -0.730 0.000
H4 0.497 1.602 0.000
H5 -1.937 -0.318 0.000
H6 -1.866 1.236 0.886
H7 -1.866 1.236 -0.886

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.51711.62591.09252.15622.15292.1529
C21.51712.79522.21031.09251.09771.0977
S31.62592.79522.36532.85833.50063.5006
H41.09252.21032.36533.10052.55072.5507
H52.15621.09252.85833.10051.78981.7898
H62.15291.09773.50062.55071.78981.7716
H72.15291.09773.50062.55071.78981.7716

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.373 C1 C2 H6 109.801
C1 C2 H7 109.801 C2 C1 S3 125.549
C2 C1 H4 114.800 S3 C1 H4 119.652
H5 C2 H6 109.610 H5 C2 H7 109.610
H6 C2 H7 107.599
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability