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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-476.018704
Energy at 298.15K-476.023230
HF Energy-475.589545
Nuclear repulsion energy101.310344
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 MP2/6-311G**
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 3177 3018 11.26      
2 A1 1529 1453 4.91      
3 A1 1176 1117 3.30      
4 A1 1090 1035 0.37      
5 A1 678 644 20.35      
6 A2 3268 3105 0.00      
7 A2 1209 1149 0.00      
8 A2 952 905 0.00      
9 B1 3281 3117 5.25      
10 B1 1006 956 9.69      
11 B1 859 816 0.14      
12 B2 3174 3016 8.84      
13 B2 1499 1424 0.30      
14 B2 1125 1069 44.04      
15 B2 708 673 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 12364.2 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 11748.5 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 MP2/6-311G**
ABC
0.73602 0.36189 0.26886

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.743 -0.792
C3 0.000 -0.743 -0.792
H4 -0.917 1.247 -1.075
H5 0.917 1.247 -1.075
H6 0.917 -1.247 -1.075
H7 -0.917 -1.247 -1.075

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81341.81342.48002.48002.48002.4800
C21.81341.48541.08451.08452.20962.2096
C31.81341.48542.20962.20961.08451.0845
H42.48001.08452.20961.83463.09682.4949
H52.48001.08452.20961.83462.49493.0968
H62.48002.20961.08453.09682.49491.8346
H72.48002.20961.08452.49493.09681.8346

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 115.377
S1 C2 H5 115.377 S1 C3 C2 65.823
S1 C3 H6 115.377 S1 C3 H7 115.377
C2 S1 C3 48.354 C2 C3 H6 117.735
C2 C3 H7 117.735 C3 C2 H4 117.735
C3 C2 H5 117.735 H4 C2 H5 115.515
H6 C3 H7 115.515
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability