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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-23.362475
Energy at 298.15K-23.366213
HF Energy-23.148969
Nuclear repulsion energy34.386094
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' 3159 3053 39.86      
2 A' 3123 3017 31.22      
3 A' 3025 2923 21.77      
4 A' 1509 1458 10.98      
5 A' 1443 1394 11.09      
6 A' 1391 1344 19.96      
7 A' 1169 1129 13.32      
8 A' 1104 1067 5.10      
9 A' 808 780 4.18      
10 A' 386 373 0.42      
11 A" 3113 3008 35.60      
12 A" 1497 1447 16.43      
13 A" 1069 1033 6.32      
14 A" 761 735 31.02      
15 A" 144 139 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 11849.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 11450.5 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 MP2/CEP-31G
ABC
1.53986 0.17604 0.16293

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 0.658 0.000
C2 -1.539 0.765 0.000
S3 0.903 -0.786 0.000
H4 0.556 1.618 0.000
H5 -2.009 -0.238 0.000
H6 -1.877 1.331 0.897
H7 -1.877 1.331 -0.897

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.54251.70271.10942.19972.18662.1866
C21.54252.89232.26171.10771.11321.1132
S31.70272.89232.42882.96273.60733.6073
H41.10942.26172.42883.16602.60902.6090
H52.19971.10772.96273.16601.81191.8119
H62.18661.11323.60732.60901.81191.7937
H72.18661.11323.60732.60901.81191.7937

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.142 C1 C2 H6 109.790
C1 C2 H7 109.790 C2 C1 S3 125.986
C2 C1 H4 116.094 S3 C1 H4 117.920
H5 C2 H6 109.346 H5 C2 H7 109.346
H6 C2 H7 107.345
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability