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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP3/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-476.155854
Energy at 298.15K-476.160347
HF Energy-475.610912
Nuclear repulsion energy101.224049
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/cc-pVTZ
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 3193 3016 10.56      
2 A1 1525 1440 2.57      
3 A1 1161 1097 2.00      
4 A1 1067 1008 0.98      
5 A1 660 623 22.40      
6 A2 3276 3094 0.00      
7 A2 1217 1150 0.00      
8 A2 919 868 0.00      
9 B1 3289 3107 3.10      
10 B1 978 924 3.00      
11 B1 846 799 0.30      
12 B2 3189 3012 9.28      
13 B2 1497 1414 0.58      
14 B2 1096 1035 25.16      
15 B2 701 663 1.02      

Unscaled Zero Point Vibrational Energy (zpe) 12306.0 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 11625.5 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/cc-pVTZ
ABC
0.73883 0.35970 0.26770

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.865
C2 0.000 0.741 -0.797
C3 0.000 -0.741 -0.797
H4 -0.912 1.247 -1.071
H5 0.912 1.247 -1.071
H6 0.912 -1.247 -1.071
H7 -0.912 -1.247 -1.071

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82011.82012.47732.47732.47732.4773
C21.82011.48291.07841.07842.20482.2048
C31.82011.48292.20482.20481.07841.0784
H42.47731.07842.20481.82443.09002.4939
H52.47731.07842.20481.82442.49393.0900
H62.47732.20481.07843.09002.49391.8244
H72.47732.20481.07842.49393.09001.8244

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.961 S1 C2 H4 115.033
S1 C2 H5 115.033 S1 C3 C2 65.961
S1 C3 H6 115.033 S1 C3 H7 115.033
C2 S1 C3 48.078 C2 C3 H6 117.956
C2 C3 H7 117.956 C3 C2 H4 117.956
C3 C2 H5 117.956 H4 C2 H5 115.544
H6 C3 H7 115.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability