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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCD/TZVP

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/TZVP
 hartrees
Energy at 0K-476.052031
Energy at 298.15K-476.056537
HF Energy-475.593412
Nuclear repulsion energy100.842662
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/TZVP
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 3184 3018 11.26      
2 A1 1541 1461 4.04      
3 A1 1170 1109 5.10      
4 A1 1098 1041 0.29      
5 A1 660 626 23.48      
6 A2 3268 3098 0.00      
7 A2 1223 1160 0.00      
8 A2 931 883 0.00      
9 B1 3282 3111 8.05      
10 B1 991 940 3.92      
11 B1 862 817 0.06      
12 B2 3180 3014 11.33      
13 B2 1511 1432 0.11      
14 B2 1136 1077 45.15      
15 B2 688 653 1.87      

Unscaled Zero Point Vibrational Energy (zpe) 12362.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 11719.2 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/TZVP
ABC
0.73960 0.35506 0.26528

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.872
C2 0.000 0.740 -0.802
C3 0.000 -0.740 -0.802
H4 -0.913 1.247 -1.081
H5 0.913 1.247 -1.081
H6 0.913 -1.247 -1.081
H7 -0.913 -1.247 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82961.82962.49082.49082.49082.4908
C21.82961.48091.08141.08142.20542.2054
C31.82961.48092.20542.20541.08141.0814
H42.49081.08142.20541.82663.09182.4946
H52.49081.08142.20541.82662.49463.0918
H62.49082.20541.08143.09182.49461.8266
H72.49082.20541.08142.49463.09181.8266

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.127 S1 C2 H4 115.236
S1 C2 H5 115.236 S1 C3 C2 66.127
S1 C3 H6 115.236 S1 C3 H7 115.236
C2 S1 C3 47.746 C2 C3 H6 117.949
C2 C3 H7 117.949 C3 C2 H4 117.949
C3 C2 H5 117.949 H4 C2 H5 115.258
H6 C3 H7 115.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability