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: MP3=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.354080
Energy at 298.15K-476.358585
HF Energy-475.605011
Nuclear repulsion energy101.726589
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/6-311+G(3df,2p)
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 3194 3194 11.75      
2 A1 1529 1529 2.34      
3 A1 1168 1168 1.60      
4 A1 1069 1069 0.87      
5 A1 669 669 22.58      
6 A2 3278 3278 0.00      
7 A2 1217 1217 0.00      
8 A2 923 923 0.00      
9 B1 3292 3292 1.65      
10 B1 986 986 2.83      
11 B1 848 848 0.57      
12 B2 3189 3189 7.65      
13 B2 1500 1500 0.84      
14 B2 1103 1103 21.92      
15 B2 713 713 1.37      

Unscaled Zero Point Vibrational Energy (zpe) 12338.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12338.5 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=FULL/6-311+G(3df,2p)
ABC
0.74127 0.36506 0.27090

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.859
C2 0.000 0.740 -0.789
C3 0.000 -0.740 -0.789
H4 -0.911 1.245 -1.067
H5 0.911 1.245 -1.067
H6 0.911 -1.245 -1.067
H7 -0.911 -1.245 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80671.80672.46792.46792.46792.4679
C21.80671.48011.07821.07822.20202.2020
C31.80671.48012.20202.20201.07821.0782
H42.46791.07822.20201.82203.08602.4907
H52.46791.07822.20201.82202.49073.0860
H62.46792.20201.07823.08602.49071.8220
H72.46792.20201.07822.49073.08601.8220

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.820 S1 C2 H4 115.285
S1 C2 H5 115.285 S1 C3 C2 65.820
S1 C3 H6 115.285 S1 C3 H7 115.285
C2 S1 C3 48.361 C2 C3 H6 117.949
C2 C3 H7 117.949 C3 C2 H4 117.949
C3 C2 H5 117.949 H4 C2 H5 115.327
H6 C3 H7 115.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability