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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD/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/6-311G*
 hartrees
Energy at 0K-476.020264
Energy at 298.15K-476.024768
HF Energy-475.582584
Nuclear repulsion energy100.996803
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/6-311G*
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 3147 3001 14.31      
2 A1 1537 1466 3.70      
3 A1 1172 1118 3.74      
4 A1 1089 1038 0.54      
5 A1 666 635 24.31      
6 A2 3229 3079 0.00      
7 A2 1219 1163 0.00      
8 A2 945 901 0.00      
9 B1 3243 3092 9.10      
10 B1 1002 955 10.15      
11 B1 861 821 0.39      
12 B2 3142 2996 13.39      
13 B2 1505 1435 0.79      
14 B2 1123 1071 46.62      
15 B2 694 661 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 12286.8 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 11715.4 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/6-311G*
ABC
0.73295 0.35918 0.26695

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.866
C2 0.000 0.744 -0.795
C3 0.000 -0.744 -0.795
H4 -0.917 1.253 -1.078
H5 0.917 1.253 -1.078
H6 0.917 -1.253 -1.078
H7 -0.917 -1.253 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82021.82022.48822.48822.48822.4882
C21.82021.48771.08651.08652.21562.2156
C31.82021.48772.21562.21561.08651.0865
H42.48821.08652.21561.83443.10572.5060
H52.48821.08652.21561.83442.50603.1057
H62.48822.21561.08653.10572.50601.8344
H72.48822.21561.08652.50603.10571.8344

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.880 S1 C2 H4 115.411
S1 C2 H5 115.411 S1 C3 C2 65.880
S1 C3 H6 115.411 S1 C3 H7 115.411
C2 S1 C3 48.240 C2 C3 H6 117.945
C2 C3 H7 117.945 C3 C2 H4 117.945
C3 C2 H5 117.945 H4 C2 H5 115.165
H6 C3 H7 115.165
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability