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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP3=FULL/6-31G**

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=FULL/6-31G**
 hartrees
Energy at 0K-476.010213
Energy at 298.15K-476.014751
HF Energy-475.553334
Nuclear repulsion energy101.424851
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=FULL/6-31G**
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 3249 3249 10.58      
2 A1 1576 1576 5.61      
3 A1 1196 1196 4.08      
4 A1 1104 1104 0.38      
5 A1 685 685 21.30      
6 A2 3334 3334 0.00      
7 A2 1243 1243 0.00      
8 A2 951 951 0.00      
9 B1 3346 3346 7.32      
10 B1 1013 1013 4.40      
11 B1 871 871 0.19      
12 B2 3244 3244 11.47      
13 B2 1545 1545 0.01      
14 B2 1139 1139 34.45      
15 B2 719 719 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 12607.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12607.7 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=FULL/6-31G**
ABC
0.73999 0.36191 0.26886

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.741 -0.791
C3 0.000 -0.741 -0.791
H4 -0.909 1.246 -1.079
H5 0.909 1.246 -1.079
H6 0.909 -1.246 -1.079
H7 -0.909 -1.246 -1.079

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81321.81322.48012.48012.48012.4801
C21.81321.48271.07861.07862.20432.2043
C31.81321.48272.20432.20431.07861.0786
H42.48011.07862.20431.81773.08472.4922
H52.48011.07862.20431.81772.49223.0847
H62.48012.20431.07863.08472.49221.8177
H72.48012.20431.07862.49223.08471.8177

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.866 S1 C2 H4 115.757
S1 C2 H5 115.757 S1 C3 C2 65.866
S1 C3 H6 115.757 S1 C3 H7 115.757
C2 S1 C3 48.268 C2 C3 H6 117.903
C2 C3 H7 117.903 C3 C2 H4 117.903
C3 C2 H5 117.903 H4 C2 H5 114.832
H6 C3 H7 114.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability