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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-476.156310
Energy at 298.15K-476.160798
HF Energy-475.610848
Nuclear repulsion energy101.207327
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 CCSD/cc-pVTZ
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 2979 12.45      
2 A1 1522 1433 2.88      
3 A1 1158 1090 2.11      
4 A1 1066 1003 0.66      
5 A1 655 617 23.48      
6 A2 3244 3054 0.00      
7 A2 1214 1143 0.00      
8 A2 917 863 0.00      
9 B1 3258 3066 4.32      
10 B1 976 919 2.98      
11 B1 844 794 0.27      
12 B2 3160 2975 11.25      
13 B2 1494 1407 0.45      
14 B2 1098 1033 25.60      
15 B2 698 657 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 12235.0 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 11515.6 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 CCSD/cc-pVTZ
ABC
0.73812 0.35985 0.26771

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.741 -0.795
C3 0.000 -0.741 -0.795
H4 -0.912 1.249 -1.074
H5 0.912 1.249 -1.074
H6 0.912 -1.249 -1.074
H7 -0.912 -1.249 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81761.81762.47992.47992.47992.4799
C21.81761.48151.08061.08062.20672.2067
C31.81761.48152.20672.20671.08061.0806
H42.47991.08062.20671.82363.09332.4987
H52.47991.08062.20671.82362.49873.0933
H62.47992.20671.08063.09332.49871.8236
H72.47992.20671.08062.49873.09331.8236

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.950 S1 C2 H4 115.296
S1 C2 H5 115.296 S1 C3 C2 65.950
S1 C3 H6 115.296 S1 C3 H7 115.296
C2 S1 C3 48.100 C2 C3 H6 118.077
C2 C3 H7 118.077 C3 C2 H4 118.077
C3 C2 H5 118.077 H4 C2 H5 115.085
H6 C3 H7 115.085
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability