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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-475.918050
Energy at 298.15K-475.921913
HF Energy-475.551557
Nuclear repulsion energy93.016740
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 CISD/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' 3249 3008 9.51      
2 A' 3207 2969 16.22      
3 A' 3125 2893 5.96      
4 A' 1565 1449 4.06      
5 A' 1488 1378 34.96      
6 A' 1467 1358 35.85      
7 A' 1231 1140 29.33      
8 A' 1143 1058 4.95      
9 A' 878 812 0.32      
10 A' 414 383 1.77      
11 A" 3186 2950 10.31      
12 A" 1554 1439 10.23      
13 A" 1110 1028 3.96      
14 A" 805 745 15.76      
15 A" 171 158 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 12295.5 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 11383.2 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 CISD/6-31G*
ABC
1.64482 0.19140 0.17705

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.619 0.000
C2 -1.493 0.704 0.000
S3 0.879 -0.734 0.000
H4 0.512 1.580 0.000
H5 -1.946 -0.285 0.000
H6 -1.832 1.260 0.879
H7 -1.832 1.260 -0.879

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49581.61331.08952.14612.13072.1307
C21.49582.77392.18841.08781.09361.0936
S31.61332.77392.34372.86073.47813.4781
H41.08952.18842.34373.08602.52362.5236
H52.14611.08782.86073.08601.78111.7811
H62.13071.09363.47812.52361.78111.7574
H72.13071.09363.47812.52361.78111.7574

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.356 C1 C2 H6 109.766
C1 C2 H7 109.766 C2 C1 S3 126.264
C2 C1 H4 114.755 S3 C1 H4 118.981
H5 C2 H6 109.463 H5 C2 H7 109.463
H6 C2 H7 106.922
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability