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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP2=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 MP2=FULL/6-31G
 hartrees
Energy at 0K-475.722219
Energy at 298.15K-475.726598
HF Energy-475.476219
Nuclear repulsion energy96.987055
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=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 3200 3041 4.44      
2 A1 1559 1481 2.82      
3 A1 1162 1104 2.69      
4 A1 1105 1050 4.04      
5 A1 574 546 17.40      
6 A2 3290 3126 0.00      
7 A2 1254 1192 0.00      
8 A2 902 857 0.00      
9 B1 3307 3142 5.71      
10 B1 928 882 5.63      
11 B1 881 837 0.64      
12 B2 3194 3035 5.15      
13 B2 1540 1464 2.91      
14 B2 1121 1065 41.53      
15 B2 586 557 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 12302.6 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 11688.7 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 MP2=FULL/6-31G
ABC
0.72912 0.31385 0.24071

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.929
C2 0.000 0.744 -0.865
C3 0.000 -0.744 -0.865
H4 -0.918 1.264 -1.122
H5 0.918 1.264 -1.122
H6 0.918 -1.264 -1.122
H7 -0.918 -1.264 -1.122

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.94221.94222.57882.57882.57882.5788
C21.94221.48761.08651.08652.22302.2230
C31.94221.48762.22302.22301.08651.0865
H42.57881.08652.22301.83693.12512.5283
H52.57881.08652.22301.83692.52833.1251
H62.57882.22301.08653.12512.52831.8369
H72.57882.22301.08652.52833.12511.8369

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.482 S1 C2 H4 113.718
S1 C2 H5 113.718 S1 C3 C2 67.482
S1 C3 H6 113.718 S1 C3 H7 113.718
C2 S1 C3 45.035 C2 C3 H6 118.615
C2 C3 H7 118.615 C3 C2 H4 118.615
C3 C2 H5 118.615 H4 C2 H5 115.407
H6 C3 H7 115.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability