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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/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 CCD/6-311G**
 hartrees
Energy at 0K-476.048266
Energy at 298.15K-476.052801
HF Energy-475.589431
Nuclear repulsion energy101.242012
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/6-311G**
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 3169 3027 13.13      
2 A1 1540 1470 4.68      
3 A1 1177 1124 4.43      
4 A1 1094 1044 0.17      
5 A1 682 652 22.32      
6 A2 3252 3106 0.00      
7 A2 1218 1163 0.00      
8 A2 951 909 0.00      
9 B1 3265 3119 8.80      
10 B1 1011 966 8.37      
11 B1 862 824 0.11      
12 B2 3165 3023 11.78      
13 B2 1508 1440 0.17      
14 B2 1139 1088 40.87      
15 B2 713 681 2.21      

Unscaled Zero Point Vibrational Energy (zpe) 12372.5 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 11816.9 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/6-311G**
ABC
0.73321 0.36202 0.26850

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.745 -0.791
C3 0.000 -0.745 -0.791
H4 -0.917 1.250 -1.078
H5 0.917 1.250 -1.078
H6 0.917 -1.250 -1.078
H7 -0.917 -1.250 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81331.81332.48332.48332.48332.4833
C21.81331.48911.08531.08532.21382.2138
C31.81331.48912.21382.21381.08531.0853
H42.48331.08532.21381.83313.10032.5003
H52.48331.08532.21381.83312.50033.1003
H62.48332.21381.08533.10032.50031.8331
H72.48332.21381.08532.50033.10031.8331

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.758 S1 C2 H4 115.603
S1 C2 H5 115.603 S1 C3 C2 65.758
S1 C3 H6 115.603 S1 C3 H7 115.603
C2 S1 C3 48.485 C2 C3 H6 117.765
C2 C3 H7 117.765 C3 C2 H4 117.765
C3 C2 H5 117.765 H4 C2 H5 115.241
H6 C3 H7 115.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability