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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/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 MP2/TZVP
 hartrees
Energy at 0K-476.022728
Energy at 298.15K-476.027223
HF Energy-475.593461
Nuclear repulsion energy100.896525
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/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 3188 3022 9.30      
2 A1 1529 1450 4.24      
3 A1 1168 1107 3.95      
4 A1 1093 1036 0.53      
5 A1 656 622 20.87      
6 A2 3281 3110 0.00      
7 A2 1214 1150 0.00      
8 A2 930 882 0.00      
9 B1 3294 3123 4.65      
10 B1 984 933 4.61      
11 B1 858 813 0.07      
12 B2 3186 3020 8.43      
13 B2 1501 1423 0.23      
14 B2 1120 1061 49.03      
15 B2 685 649 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 12343.1 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 11700.0 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/TZVP
ABC
0.74155 0.35506 0.26560

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.739 -0.802
C3 0.000 -0.739 -0.802
H4 -0.914 1.245 -1.078
H5 0.914 1.245 -1.078
H6 0.914 -1.245 -1.078
H7 -0.914 -1.245 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82951.82952.48782.48782.48782.4878
C21.82951.47811.08121.08122.20242.2024
C31.82951.47812.20242.20241.08121.0812
H42.48781.08122.20241.82893.09022.4909
H52.48781.08122.20241.82892.49093.0902
H62.48782.20241.08123.09022.49091.8289
H72.48782.20241.08122.49093.09021.8289

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.174 S1 C2 H4 115.020
S1 C2 H5 115.020 S1 C3 C2 66.174
S1 C3 H6 115.020 S1 C3 H7 115.020
C2 S1 C3 47.653 C2 C3 H6 117.929
C2 C3 H7 117.929 C3 C2 H4 117.929
C3 C2 H5 117.929 H4 C2 H5 115.512
H6 C3 H7 115.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability