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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-476.172300
Energy at 298.15K-476.167312
HF Energy-475.551772
Nuclear repulsion energy93.173314
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 CBS-Q
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' 3315 3315 15.95      
2 A' 3289 3289 13.77      
3 A' 3181 3181 9.76      
4 A' 1618 1618 4.97      
5 A' 1538 1538 28.31      
6 A' 1511 1511 58.93      
7 A' 1247 1247 56.40      
8 A' 1176 1176 14.97      
9 A' 891 891 1.22      
10 A' 421 421 3.16      
11 A" 3237 3237 14.99      
12 A" 1607 1607 9.25      
13 A" 1154 1154 3.96      
14 A" 839 839 11.52      
15 A" 174 174 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 12598.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12598.3 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 CBS-Q
ABC
1.61880 0.18988 0.17550

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.613 0.000
C2 -1.496 0.702 0.000
S3 0.880 -0.731 0.000
H4 0.507 1.572 0.000
H5 -1.955 -0.280 0.000
H6 -1.828 1.260 0.876
H7 -1.828 1.260 -0.876

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49891.60701.08412.14952.12722.1272
C21.49892.77502.18391.08331.09011.0901
S31.60702.77502.33312.87113.47333.4733
H41.08412.18392.33313.08042.51252.5125
H52.14951.08332.87113.08041.77591.7759
H62.12721.09013.47332.51251.77591.7511
H72.12721.09013.47332.51251.77591.7511

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.682 C1 C2 H6 109.486
C1 C2 H7 109.486 C2 C1 S3 126.587
C2 C1 H4 114.487 S3 C1 H4 118.927
H5 C2 H6 109.594 H5 C2 H7 109.594
H6 C2 H7 106.878
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability