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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-23.392759
Energy at 298.15K-23.396538
HF Energy-23.154941
Nuclear repulsion energy34.609814
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/CEP-121G
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' 3101 3026 27.95      
2 A' 3070 2997 18.06      
3 A' 2958 2887 16.39      
4 A' 1516 1480 10.13      
5 A' 1445 1410 13.49      
6 A' 1397 1364 23.21      
7 A' 1162 1134 13.05      
8 A' 1103 1077 2.19      
9 A' 806 786 3.84      
10 A' 390 381 0.65      
11 A" 3048 2975 23.18      
12 A" 1493 1457 12.56      
13 A" 1070 1045 10.81      
14 A" 772 753 26.17      
15 A" 151 147 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 11740.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 11458.8 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/CEP-121G
ABC
1.55234 0.17841 0.16503

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.658 0.000
C2 -1.527 0.760 0.000
S3 0.896 -0.782 0.000
H4 0.550 1.611 0.000
H5 -1.987 -0.239 0.000
H6 -1.867 1.318 0.891
H7 -1.867 1.318 -0.891

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.53081.69641.09992.18052.17192.1719
C21.53082.87242.24531.09981.10541.1054
S31.69642.87242.41772.93383.58383.5838
H41.09992.24532.41773.14032.59332.5933
H52.18051.09982.93383.14031.79871.7987
H62.17191.10543.58382.59331.79871.7823
H72.17191.10543.58382.59331.79871.7823

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.909 C1 C2 H6 109.898
C1 C2 H7 109.898 C2 C1 S3 125.679
C2 C1 H4 116.226 S3 C1 H4 118.095
H5 C2 H6 109.311 H5 C2 H7 109.311
H6 C2 H7 107.444
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability