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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD/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/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.145690
Energy at 298.15K-476.150180
HF Energy-475.604806
Nuclear repulsion energy101.460026
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/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 3157 2978 13.50      
2 A1 1523 1436 2.75      
3 A1 1158 1092 1.66      
4 A1 1064 1004 0.55      
5 A1 659 622 23.85      
6 A2 3239 3055 0.00      
7 A2 1212 1143 0.00      
8 A2 918 866 0.00      
9 B1 3253 3068 2.62      
10 B1 980 925 2.68      
11 B1 843 795 0.48      
12 B2 3153 2973 9.47      
13 B2 1494 1409 0.57      
14 B2 1099 1037 22.04      
15 B2 704 664 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 12228.2 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 11532.4 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/6-311+G(3df,2p)
ABC
0.73761 0.36312 0.26950

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.742 -0.791
C3 0.000 -0.742 -0.791
H4 -0.913 1.249 -1.070
H5 0.913 1.249 -1.070
H6 0.913 -1.249 -1.070
H7 -0.913 -1.249 -1.070

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81131.81132.47502.47502.47502.4750
C21.81131.48321.08161.08162.20812.2081
C31.81131.48322.20812.20811.08161.0816
H42.47501.08162.20811.82683.09502.4984
H52.47501.08162.20811.82682.49843.0950
H62.47502.20811.08163.09502.49841.8268
H72.47502.20811.08162.49843.09501.8268

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.830 S1 C2 H4 115.309
S1 C2 H5 115.309 S1 C3 C2 65.830
S1 C3 H6 115.309 S1 C3 H7 115.309
C2 S1 C3 48.340 C2 C3 H6 117.990
C2 C3 H7 117.990 C3 C2 H4 117.990
C3 C2 H5 117.990 H4 C2 H5 115.239
H6 C3 H7 115.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability