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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)=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 QCISD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.382757
Energy at 298.15K-476.387219
HF Energy-475.604733
Nuclear repulsion energy101.321120
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)=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 3143 3143        
2 A1 1507 1507        
3 A1 1148 1148        
4 A1 1051 1051        
5 A1 648 648        
6 A2 3227 3227        
7 A2 1199 1199        
8 A2 909 909        
9 B1 3240 3240        
10 B1 969 969        
11 B1 835 835        
12 B2 3139 3139        
13 B2 1480 1480        
14 B2 1080 1080        
15 B2 686 686        

Unscaled Zero Point Vibrational Energy (zpe) 12130.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12130.4 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)=FULL/6-311+G(3df,2p)
ABC
0.73756 0.36146 0.26863

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.741 -0.794
C3 0.000 -0.741 -0.794
H4 -0.914 1.249 -1.071
H5 0.914 1.249 -1.071
H6 0.914 -1.249 -1.071
H7 -0.914 -1.249 -1.071

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81531.81532.47742.47742.47742.4774
C21.81531.48291.08201.08202.20812.2081
C31.81531.48292.20812.20811.08201.0820
H42.47741.08202.20811.82883.09632.4985
H52.47741.08202.20811.82882.49853.0963
H62.47742.20811.08203.09632.49851.8288
H72.47742.20811.08202.49853.09631.8288

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.892 S1 C2 H4 115.184
S1 C2 H5 115.184 S1 C3 C2 65.892
S1 C3 H6 115.184 S1 C3 H7 115.184
C2 S1 C3 48.216 C2 C3 H6 117.989
C2 C3 H7 117.989 C3 C2 H4 117.989
C3 C2 H5 117.989 H4 C2 H5 115.356
H6 C3 H7 115.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability