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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)/Def2TZVPP
 hartrees
Energy at 0K-476.178986
Energy at 298.15K-476.183428
HF Energy-475.607195
Nuclear repulsion energy101.016415
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 QCISD(T)/Def2TZVPP
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 3146 3146        
2 A1 1504 1504        
3 A1 1138 1138        
4 A1 1050 1050        
5 A1 638 638        
6 A2 3227 3227        
7 A2 1194 1194        
8 A2 905 905        
9 B1 3243 3243        
10 B1 963 963        
11 B1 834 834        
12 B2 3140 3140        
13 B2 1479 1479        
14 B2 1074 1074        
15 B2 678 678        

Unscaled Zero Point Vibrational Energy (zpe) 12106.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12106.3 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 QCISD(T)/Def2TZVPP
ABC
0.73452 0.35867 0.26675

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.744 -0.798
C3 0.000 -0.744 -0.798
H4 -0.915 1.250 -1.074
H5 0.915 1.250 -1.074
H6 0.915 -1.250 -1.074
H7 -0.915 -1.250 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82271.82272.48292.48292.48292.4829
C21.82271.48741.08181.08182.21112.2111
C31.82271.48742.21112.21111.08181.0818
H42.48291.08182.21111.83043.09872.5003
H52.48291.08182.21111.83042.50033.0987
H62.48292.21111.08183.09872.50031.8304
H72.48292.21111.08182.50033.09871.8304

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.921 S1 C2 H4 115.088
S1 C2 H5 115.088 S1 C3 C2 65.921
S1 C3 H6 115.088 S1 C3 H7 115.088
C2 S1 C3 48.159 C2 C3 H6 117.914
C2 C3 H7 117.914 C3 C2 H4 117.914
C3 C2 H5 117.914 H4 C2 H5 115.557
H6 C3 H7 115.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability