return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-476.613245
Energy at 298.15K-476.617713
HF Energy-476.432297
Nuclear repulsion energy100.863338
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 B2PLYP=FULL/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 3156 3156 16.43      
2 A1 1531 1531 4.57      
3 A1 1164 1164 3.82      
4 A1 1072 1072 0.33      
5 A1 642 642 26.65      
6 A2 3239 3239 0.00      
7 A2 1217 1217 0.00      
8 A2 930 930 0.00      
9 B1 3254 3254 9.30      
10 B1 985 985 11.20      
11 B1 858 858 0.47      
12 B2 3154 3154 15.42      
13 B2 1502 1502 0.83      
14 B2 1100 1100 47.92      
15 B2 671 671 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 12237.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12237.5 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 B2PLYP=FULL/6-311G*
ABC
0.73883 0.35562 0.26550

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.740 -0.802
C3 0.000 -0.740 -0.802
H4 -0.913 1.252 -1.077
H5 0.913 1.252 -1.077
H6 0.913 -1.252 -1.077
H7 -0.913 -1.252 -1.077

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82871.82872.48922.48922.48922.4892
C21.82871.47971.08281.08282.20832.2083
C31.82871.47972.20832.20831.08281.0828
H42.48921.08282.20831.82693.09922.5035
H52.48921.08282.20831.82692.50353.0992
H62.48922.20831.08283.09922.50351.8269
H72.48922.20831.08282.50353.09921.8269

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.136 S1 C2 H4 115.094
S1 C2 H5 115.094 S1 C3 C2 66.136
S1 C3 H6 115.094 S1 C3 H7 115.094
C2 S1 C3 47.728 C2 C3 H6 118.213
C2 C3 H7 118.213 C3 C2 H4 118.213
C3 C2 H5 118.213 H4 C2 H5 115.046
H6 C3 H7 115.046
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability