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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD=FULL/6-311+G(3df,2p)

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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.354854
Energy at 298.15K-476.359354
HF Energy-475.604956
Nuclear repulsion energy101.706555
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=FULL/6-311+G(3df,2p)
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 3169 3169 13.45      
2 A1 1526 1526 2.57      
3 A1 1166 1166 1.68      
4 A1 1067 1067 0.61      
5 A1 664 664 23.49      
6 A2 3250 3250 0.00      
7 A2 1214 1214 0.00      
8 A2 921 921 0.00      
9 B1 3264 3264 2.46      
10 B1 984 984 2.77      
11 B1 846 846 0.52      
12 B2 3164 3164 9.30      
13 B2 1497 1497 0.70      
14 B2 1104 1104 22.27      
15 B2 710 710 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 12272.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12272.6 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=FULL/6-311+G(3df,2p)
ABC
0.74095 0.36502 0.27088

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.859
C2 0.000 0.740 -0.789
C3 0.000 -0.740 -0.789
H4 -0.912 1.247 -1.069
H5 0.912 1.247 -1.069
H6 0.912 -1.247 -1.069
H7 -0.912 -1.247 -1.069

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80631.80632.47002.47002.47002.4700
C21.80631.47951.08001.08002.20362.2036
C31.80631.47952.20362.20361.08001.0800
H42.47001.08002.20361.82343.08912.4935
H52.47001.08002.20361.82342.49353.0891
H62.47002.20361.08003.08912.49351.8234
H72.47002.20361.08002.49353.08911.8234

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.823 S1 C2 H4 115.369
S1 C2 H5 115.369 S1 C3 C2 65.823
S1 C3 H6 115.369 S1 C3 H7 115.369
C2 S1 C3 48.353 C2 C3 H6 117.997
C2 C3 H7 117.997 C3 C2 H4 117.997
C3 C2 H5 117.997 H4 C2 H5 115.164
H6 C3 H7 115.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability