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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-475.968111
Energy at 298.15K-475.971923
HF Energy-475.550869
Nuclear repulsion energy92.433210
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
(Å4/u)
Dep P Dep U
1 A' 3179 3028 10.15      
2 A' 3131 2981 18.76      
3 A' 3058 2912 7.34      
4 A' 1531 1458 3.73      
5 A' 1454 1384 25.20      
6 A' 1430 1362 39.37      
7 A' 1194 1137 24.75      
8 A' 1114 1061 5.64      
9 A' 849 809 0.21      
10 A' 404 385 1.51      
11 A" 3120 2971 11.02      
12 A" 1523 1451 9.47      
13 A" 1079 1027 3.16      
14 A" 779 742 15.62      
15 A" 164 156 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 12004.8 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 11432.1 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
1.62229 0.18918 0.17496

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 -1.498 0.713 0.000
S3 0.881 -0.743 0.000
H4 0.519 1.591 0.000
H5 -1.952 -0.282 0.000
H6 -1.839 1.270 0.884
H7 -1.839 1.270 -0.884

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.50061.62791.09552.15302.14002.1400
C21.50062.78932.19961.09351.09911.0991
S31.62792.78932.36162.87073.49803.4980
H41.09552.19962.36163.10042.53862.5386
H52.15301.09352.87073.10041.78971.7897
H62.14001.09913.49802.53861.78971.7670
H72.14001.09913.49802.53861.78971.7670

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.217 C1 C2 H6 109.845
C1 C2 H7 109.845 C2 C1 S3 126.098
C2 C1 H4 114.941 S3 C1 H4 118.962
H5 C2 H6 109.419 H5 C2 H7 109.419
H6 C2 H7 107.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability