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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP3/TZVP

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/TZVP
 hartrees
Energy at 0K-476.051011
Energy at 298.15K-476.055517
HF Energy-475.593462
Nuclear repulsion energy100.827580
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/TZVP
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 3206 2998 10.30      
2 A1 1544 1444 4.03      
3 A1 1172 1096 4.97      
4 A1 1100 1028 0.38      
5 A1 659 616 23.53      
6 A2 3291 3078 0.00      
7 A2 1226 1147 0.00      
8 A2 933 872 0.00      
9 B1 3305 3091 7.16      
10 B1 992 928 4.04      
11 B1 864 808 0.06      
12 B2 3202 2994 10.39      
13 B2 1513 1415 0.13      
14 B2 1136 1063 46.78      
15 B2 686 642 1.77      

Unscaled Zero Point Vibrational Energy (zpe) 12414.0 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 11609.5 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 MP3/TZVP
ABC
0.74011 0.35463 0.26507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.872
C2 0.000 0.741 -0.803
C3 0.000 -0.741 -0.803
H4 -0.913 1.246 -1.081
H5 0.913 1.246 -1.081
H6 0.913 -1.246 -1.081
H7 -0.913 -1.246 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83111.83112.48962.48962.48962.4896
C21.83111.48111.07971.07972.20372.2037
C31.83111.48112.20372.20371.07971.0797
H42.48961.07972.20371.82533.08892.4919
H52.48961.07972.20371.82532.49193.0889
H62.48962.20371.07973.08892.49191.8253
H72.48962.20371.07972.49193.08891.8253

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.145 S1 C2 H4 115.141
S1 C2 H5 115.141 S1 C3 C2 66.145
S1 C3 H6 115.141 S1 C3 H7 115.141
C2 S1 C3 47.711 C2 C3 H6 117.912
C2 C3 H7 117.912 C3 C2 H4 117.912
C3 C2 H5 117.912 H4 C2 H5 115.410
H6 C3 H7 115.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability