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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-475.990036
Energy at 298.15K-475.994575
HF Energy-475.553277
Nuclear repulsion energy101.306091
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 MP3/6-31+G**
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 3246 3020 10.60      
2 A1 1574 1465 5.72      
3 A1 1195 1112 4.12      
4 A1 1103 1026 0.35      
5 A1 684 637 21.55      
6 A2 3330 3099 0.00      
7 A2 1242 1156 0.00      
8 A2 953 886 0.00      
9 B1 3343 3110 7.53      
10 B1 1013 943 4.35      
11 B1 870 809 0.16      
12 B2 3241 3016 11.60      
13 B2 1544 1436 0.00      
14 B2 1137 1058 34.32      
15 B2 716 667 1.37      

Unscaled Zero Point Vibrational Energy (zpe) 12595.1 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 11719.7 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 MP3/6-31+G**
ABC
0.73860 0.36094 0.26819

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.741 -0.793
C3 0.000 -0.741 -0.793
H4 -0.910 1.246 -1.083
H5 0.910 1.246 -1.083
H6 0.910 -1.246 -1.083
H7 -0.910 -1.246 -1.083

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81641.81642.48482.48482.48482.4848
C21.81641.48221.07991.07992.20432.2043
C31.81641.48222.20432.20431.07991.0799
H42.48481.07992.20431.81963.08522.4915
H52.48481.07992.20431.81962.49153.0852
H62.48482.20431.07993.08522.49151.8196
H72.48482.20431.07992.49153.08521.8196

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.921 S1 C2 H4 115.818
S1 C2 H5 115.818 S1 C3 C2 65.921
S1 C3 H6 115.818 S1 C3 H7 115.818
C2 S1 C3 48.157 C2 C3 H6 117.860
C2 C3 H7 117.860 C3 C2 H4 117.860
C3 C2 H5 117.860 H4 C2 H5 114.796
H6 C3 H7 114.796
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability