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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: MP3/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-476.013964
Energy at 298.15K-476.018446
HF Energy-475.570263
Nuclear repulsion energy100.392110
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-pVDZ
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 3188 3022 9.45      
2 A1 1512 1433 2.71      
3 A1 1165 1104 3.09      
4 A1 1060 1005 0.49      
5 A1 670 635 20.37      
6 A2 3274 3103 0.00      
7 A2 1204 1141 0.00      
8 A2 907 860 0.00      
9 B1 3288 3116 6.36      
10 B1 971 920 3.70      
11 B1 842 798 0.15      
12 B2 3182 3017 11.12      
13 B2 1477 1400 0.22      
14 B2 1082 1026 25.97      
15 B2 697 660 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 12258.7 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 11620.0 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 MP3/cc-pVDZ
ABC
0.72549 0.35454 0.26379

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.872
C2 0.000 0.747 -0.801
C3 0.000 -0.747 -0.801
H4 -0.924 1.261 -1.085
H5 0.924 1.261 -1.085
H6 0.924 -1.261 -1.085
H7 -0.924 -1.261 -1.085

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83151.83152.50372.50372.50372.5037
C21.83151.49401.09421.09422.22792.2279
C31.83151.49402.22792.22791.09421.0942
H42.50371.09422.22791.84723.12532.5210
H52.50371.09422.22791.84722.52103.1253
H62.50372.22791.09423.12532.52101.8472
H72.50372.22791.09422.52103.12531.8472

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.929 S1 C2 H4 115.359
S1 C2 H5 115.359 S1 C3 C2 65.929
S1 C3 H6 115.359 S1 C3 H7 115.359
C2 S1 C3 48.141 C2 C3 H6 117.989
C2 C3 H7 117.989 C3 C2 H4 117.989
C3 C2 H5 117.989 H4 C2 H5 115.144
H6 C3 H7 115.144
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability