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: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-476.119919
Energy at 298.15K-476.123738
HF Energy-475.611968
Nuclear repulsion energy93.170364
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/Def2TZVPP
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' 3194 3039 4.74      
2 A' 3115 2964 18.91      
3 A' 3064 2915 4.00      
4 A' 1493 1421 6.03      
5 A' 1397 1329 31.87      
6 A' 1388 1321 28.01      
7 A' 1193 1135 18.36      
8 A' 1089 1036 1.70      
9 A' 845 804 3.39      
10 A' 396 377 1.41      
11 A" 3136 2984 4.64      
12 A" 1488 1416 8.78      
13 A" 1053 1002 5.65      
14 A" 770 732 13.35      
15 A" 176 167 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 11897.0 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 11320.0 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 MP2/Def2TZVPP
ABC
1.63588 0.19264 0.17797

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.620 0.000
C2 -1.490 0.699 0.000
S3 0.877 -0.733 0.000
H4 0.508 1.584 0.000
H5 -1.939 -0.290 0.000
H6 -1.826 1.257 0.876
H7 -1.826 1.257 -0.876

Atom - Atom Distances (Å)
  C1 C2 S3 H4 H5 H6 H7
C11.49251.61191.09012.14182.12302.1230
C21.49252.76662.18591.08611.09141.0914
S31.61192.76662.34622.85023.46833.4683
H41.09012.18592.34623.08242.51472.5147
H52.14181.08612.85023.08241.78101.7810
H62.12301.09143.46832.51471.78101.7528
H72.12301.09143.46832.51471.78101.7528

picture of Thioacetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.344 C1 C2 H6 109.518
C1 C2 H7 109.518 C2 C1 S3 125.995
C2 C1 H4 114.743 S3 C1 H4 119.261
H5 C2 H6 109.758 H5 C2 H7 109.758
H6 C2 H7 106.839
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability