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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/TZVP
 hartrees
Energy at 0K-476.073328
Energy at 298.15K-476.077785
HF Energy-475.593016
Nuclear repulsion energy100.338458
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 MP4/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3155 3038        
2 A1 1521 1465        
3 A1 1150 1107        
4 A1 1082 1042        
5 A1 634 610        
6 A2 3243 3122        
7 A2 1207 1162        
8 A2 918 884        
9 B1 3257 3136        
10 B1 973 937        
11 B1 851 819        
12 B2 3152 3035        
13 B2 1494 1439        
14 B2 1110 1069        
15 B2 657 633        

Unscaled Zero Point Vibrational Energy (zpe) 12201.1 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 11748.4 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 MP4/TZVP
ABC
0.73612 0.35019 0.26228

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.878
C2 0.000 0.742 -0.808
C3 0.000 -0.742 -0.808
H4 -0.916 1.250 -1.086
H5 0.916 1.250 -1.086
H6 0.916 -1.250 -1.086
H7 -0.916 -1.250 -1.086

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84201.84202.50162.50162.50162.5016
C21.84201.48431.08361.08362.21022.2102
C31.84201.48432.21022.21021.08361.0836
H42.50161.08362.21021.83213.09932.4999
H52.50161.08362.21021.83212.49993.0993
H62.50162.21021.08363.09932.49991.8321
H72.50162.21021.08362.49993.09931.8321

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.240 S1 C2 H4 115.059
S1 C2 H5 115.059 S1 C3 C2 66.240
S1 C3 H6 115.059 S1 C3 H7 115.059
C2 S1 C3 47.520 C2 C3 H6 117.944
C2 C3 H7 117.944 C3 C2 H4 117.944
C3 C2 H5 117.944 H4 C2 H5 115.421
H6 C3 H7 115.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability