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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G
 hartrees
Energy at 0K-475.743729
Energy at 298.15K-475.748107
HF Energy-475.475816
Nuclear repulsion energy97.023701
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 CCD/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3165 3037 4.86      
2 A1 1545 1482 2.21      
3 A1 1152 1105 3.07      
4 A1 1094 1049 3.85      
5 A1 583 560 17.13      
6 A2 3247 3116 0.00      
7 A2 1241 1191 0.00      
8 A2 896 860 0.00      
9 B1 3263 3131 8.02      
10 B1 929 892 4.51      
11 B1 872 837 0.83      
12 B2 3158 3030 6.40      
13 B2 1524 1462 3.29      
14 B2 1121 1075 40.15      
15 B2 590 566 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 12190.3 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 11696.6 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 CCD/6-31G
ABC
0.72483 0.31560 0.24134

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.927
C2 0.000 0.746 -0.861
C3 0.000 -0.746 -0.861
H4 -0.920 1.268 -1.124
H5 0.920 1.268 -1.124
H6 0.920 -1.268 -1.124
H7 -0.920 -1.268 -1.124

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.93701.93702.58032.58032.58032.5803
C21.93701.49271.08951.08952.22972.2297
C31.93701.49272.22972.22971.08951.0895
H42.58031.08952.22971.83943.13242.5354
H52.58031.08952.22971.83942.53543.1324
H62.58032.22971.08953.13242.53541.8394
H72.58032.22971.08952.53543.13241.8394

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.338 S1 C2 H4 114.036
S1 C2 H5 114.036 S1 C3 C2 67.338
S1 C3 H6 114.036 S1 C3 H7 114.036
C2 S1 C3 45.325 C2 C3 H6 118.590
C2 C3 H7 118.590 C3 C2 H4 118.590
C3 C2 H5 118.590 H4 C2 H5 115.168
H6 C3 H7 115.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability