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All results from a given calculation for CH3CHS (Thioacetaldehyde)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-23.578757
Energy at 298.15K-23.582525
HF Energy-23.214172
Nuclear repulsion energy35.046888
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 MP2/CEP-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' 3214 3051 13.28      
2 A' 3139 2980 30.42      
3 A' 3079 2924 11.25      
4 A' 1506 1430 6.86      
5 A' 1429 1356 22.54      
6 A' 1397 1326 27.24      
7 A' 1196 1136 14.17      
8 A' 1104 1048 3.89      
9 A' 845 802 4.07      
10 A' 391 371 0.88      
11 A" 3161 3001 16.58      
12 A" 1498 1422 14.56      
13 A" 1066 1012 4.97      
14 A" 767 728 21.77      
15 A" 154 146 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 11972.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 11366.7 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 MP2/CEP-31G*
ABC
1.57532 0.18597 0.17175

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.636 0.000
C2 -1.520 0.707 0.000
S3 0.893 -0.744 0.000
H4 0.520 1.610 0.000
H5 -1.964 -0.301 0.000
H6 -1.863 1.268 0.890
H7 -1.863 1.268 -0.890

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.52141.64331.10492.17562.15922.1592
C21.52142.81502.23151.10091.10691.1069
S31.64332.81502.38342.89073.52593.5259
H41.10492.23152.38343.13432.56712.5671
H52.17561.10092.89073.13431.80631.8063
H62.15921.10693.52592.56711.80631.7805
H72.15921.10693.52592.56711.80631.7805

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.117 C1 C2 H6 109.466
C1 C2 H7 109.466 C2 C1 S3 125.580
C2 C1 H4 115.436 S3 C1 H4 118.984
H5 C2 H6 109.810 H5 C2 H7 109.810
H6 C2 H7 107.084
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability