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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD(T)/6-311G**

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(T)/6-311G**
 hartrees
Energy at 0K-476.069199
Energy at 298.15K-476.073689
HF Energy-475.589132
Nuclear repulsion energy100.788131
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(T)/6-311G**
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 3142 3031        
2 A1 1522 1468        
3 A1 1159 1118        
4 A1 1079 1041        
5 A1 657 633        
6 A2 3225 3111        
7 A2 1204 1162        
8 A2 939 906        
9 B1 3239 3124        
10 B1 995 960        
11 B1 853 823        
12 B2 3138 3028        
13 B2 1492 1440        
14 B2 1115 1075        
15 B2 679 655        

Unscaled Zero Point Vibrational Energy (zpe) 12218.7 cm-1
Scaled (by 0.9647) Zero Point Vibrational Energy (zpe) 11787.4 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 CCSD(T)/6-311G**
ABC
0.73024 0.35752 0.26578

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.868
C2 0.000 0.746 -0.797
C3 0.000 -0.746 -0.797
H4 -0.919 1.253 -1.082
H5 0.919 1.253 -1.082
H6 0.919 -1.253 -1.082
H7 -0.919 -1.253 -1.082

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82451.82452.49292.49292.49292.4929
C21.82451.49201.08721.08722.21802.2180
C31.82451.49202.21802.21801.08721.0872
H42.49291.08722.21801.83783.10702.5051
H52.49291.08722.21801.83782.50513.1070
H62.49292.21801.08723.10702.50511.8378
H72.49292.21801.08722.50513.10701.8378

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.865 S1 C2 H4 115.437
S1 C2 H5 115.437 S1 C3 C2 65.865
S1 C3 H6 115.437 S1 C3 H7 115.437
C2 S1 C3 48.270 C2 C3 H6 117.770
C2 C3 H7 117.770 C3 C2 H4 117.770
C3 C2 H5 117.770 H4 C2 H5 115.382
H6 C3 H7 115.382
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability