return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: CCSD/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 CCSD/6-31G**
 hartrees
Energy at 0K-475.998979
Energy at 298.15K-476.002810
HF Energy-475.557953
Nuclear repulsion energy92.689176
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 CCSD/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' 3228 3010 11.09      
2 A' 3177 2963 19.27      
3 A' 3100 2891 8.56      
4 A' 1541 1437 2.98      
5 A' 1460 1361 25.28      
6 A' 1438 1341 32.06      
7 A' 1205 1123 20.96      
8 A' 1119 1043 2.95      
9 A' 855 797 0.56      
10 A' 404 377 1.37      
11 A" 3168 2955 12.58      
12 A" 1533 1430 7.43      
13 A" 1082 1009 4.16      
14 A" 782 730 13.49      
15 A" 168 156 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 12129.5 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 11312.0 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 CCSD/6-31G**
ABC
1.63371 0.19000 0.17572

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.624 0.000
C2 -1.497 0.709 0.000
S3 0.881 -0.739 0.000
H4 0.512 1.586 0.000
H5 -1.948 -0.281 0.000
H6 -1.836 1.263 0.878
H7 -1.836 1.263 -0.878

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49951.62331.08902.14752.13362.1336
C21.49952.78422.19171.08711.09271.0927
S31.62332.78422.35412.86523.48783.4878
H41.08902.19172.35413.08712.52762.5276
H52.14751.08712.86523.08711.77971.7797
H62.13361.09273.48782.52761.77971.7569
H72.13361.09273.48782.52761.77971.7569

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.241 C1 C2 H6 109.793
C1 C2 H7 109.793 C2 C1 S3 126.092
C2 C1 H4 114.783 S3 C1 H4 119.125
H5 C2 H6 109.454 H5 C2 H7 109.454
H6 C2 H7 107.010
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability