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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP4/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 MP4/cc-pVTZ
 hartrees
Energy at 0K-476.183227
Energy at 298.15K-476.187672
HF Energy-475.610471
Nuclear repulsion energy100.757611
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 MP4/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 3140 3043        
2 A1 1500 1454        
3 A1 1140 1105        
4 A1 1047 1015        
5 A1 637 617        
6 A2 3225 3126        
7 A2 1197 1161        
8 A2 905 877        
9 B1 3239 3139        
10 B1 959 929        
11 B1 832 807        
12 B2 3137 3041        
13 B2 1475 1430        
14 B2 1069 1036        
15 B2 674 653        

Unscaled Zero Point Vibrational Energy (zpe) 12088.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 11716.0 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 MP4/cc-pVTZ
ABC
0.73509 0.35541 0.26507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.743 -0.802
C3 0.000 -0.743 -0.802
H4 -0.916 1.251 -1.075
H5 0.916 1.251 -1.075
H6 0.916 -1.251 -1.075
H7 -0.916 -1.251 -1.075

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83051.83052.48802.48802.48802.4880
C21.83051.48541.08261.08262.21112.2111
C31.83051.48542.21112.21111.08261.0826
H42.48801.08262.21111.83223.10142.5023
H52.48801.08262.21111.83222.50233.1014
H62.48802.21111.08263.10142.50231.8322
H72.48802.21111.08262.50233.10141.8322

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.063 S1 C2 H4 114.872
S1 C2 H5 114.872 S1 C3 C2 66.063
S1 C3 H6 114.872 S1 C3 H7 114.872
C2 S1 C3 47.874 C2 C3 H6 118.013
C2 C3 H7 118.013 C3 C2 H4 118.013
C3 C2 H5 118.013 H4 C2 H5 115.603
H6 C3 H7 115.603
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability