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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: QCISD/cc-pV(T+d)Z

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at QCISD/cc-pV(T+d)Z
 hartrees
Energy at 0K-476.161190
Energy at 298.15K-476.165012
HF Energy-475.616949
Nuclear repulsion energy92.945316
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 QCISD/cc-pV(T+d)Z
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' 3165 3021 8.59      
2 A' 3116 2975 16.57      
3 A' 3045 2907 6.77      
4 A' 1502 1434 4.97      
5 A' 1416 1352 26.81      
6 A' 1399 1335 37.60      
7 A' 1182 1129 28.05      
8 A' 1095 1045 5.10      
9 A' 843 804 0.54      
10 A' 395 377 1.91      
11 A" 3104 2963 8.83      
12 A" 1497 1429 7.71      
13 A" 1062 1014 4.54      
14 A" 776 741 12.29      
15 A" 171 163 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11882.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 11344.4 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 QCISD/cc-pV(T+d)Z
ABC
1.63495 0.19138 0.17690

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pV(T+d)Z

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.623 0.000
C2 -1.494 0.701 0.000
S3 0.879 -0.735 0.000
H4 0.511 1.584 0.000
H5 -1.942 -0.289 0.000
H6 -1.834 1.257 0.877
H7 -1.834 1.257 -0.877

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49641.61701.08902.14522.12972.1297
C21.49642.77402.19101.08691.09281.0928
S31.61702.77402.34812.85593.47813.4781
H41.08902.19102.34813.08632.52472.5247
H52.14521.08692.85593.08631.78121.7812
H62.12971.09283.47812.52471.78121.7548
H72.12971.09283.47812.52471.78121.7548

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.300 C1 C2 H6 109.696
C1 C2 H7 109.696 C2 C1 S3 125.949
C2 C1 H4 114.954 S3 C1 H4 119.098
H5 C2 H6 109.612 H5 C2 H7 109.612
H6 C2 H7 106.819
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability