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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-476.000367
Energy at 298.15K-476.004190
HF Energy-475.557840
Nuclear repulsion energy92.585523
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/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' 3225 3036 11.33      
2 A' 3171 2985 20.49      
3 A' 3097 2916 8.69      
4 A' 1539 1449 2.93      
5 A' 1457 1372 22.55      
6 A' 1434 1350 38.26      
7 A' 1196 1126 24.25      
8 A' 1115 1050 4.53      
9 A' 849 799 0.28      
10 A' 403 379 1.43      
11 A" 3166 2980 12.73      
12 A" 1533 1443 7.36      
13 A" 1079 1016 3.86      
14 A" 781 735 12.87      
15 A" 166 156 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 12104.9 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 11395.5 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/6-31G**
ABC
1.63172 0.18953 0.17530

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.626 0.000
C2 -1.497 0.712 0.000
S3 0.881 -0.742 0.000
H4 0.513 1.587 0.000
H5 -1.949 -0.277 0.000
H6 -1.836 1.267 0.879
H7 -1.836 1.267 -0.879

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.50001.62651.08952.14822.13382.1338
C21.50002.78752.19221.08741.09291.0929
S31.62652.78752.35762.86823.49093.4909
H41.08952.19222.35763.08802.52762.5276
H52.14821.08742.86823.08801.78021.7802
H62.13381.09293.49092.52761.78021.7573
H72.13381.09293.49092.52761.78021.7573

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.254 C1 C2 H6 109.767
C1 C2 H7 109.767 C2 C1 S3 126.096
C2 C1 H4 114.761 S3 C1 H4 119.143
H5 C2 H6 109.468 H5 C2 H7 109.468
H6 C2 H7 107.020
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability