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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: QCISD(T)=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-476.036641
Energy at 298.15K-476.041127
HF Energy-475.554519
Nuclear repulsion energy100.928786
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/6-31+G**
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 3191 3191        
2 A1 1547 1547        
3 A1 1167 1167        
4 A1 1088 1088        
5 A1 654 654        
6 A2 3276 3276        
7 A2 1217 1217        
8 A2 935 935        
9 B1 3288 3288        
10 B1 988 988        
11 B1 855 855        
12 B2 3187 3187        
13 B2 1518 1518        
14 B2 1120 1120        
15 B2 683 683        

Unscaled Zero Point Vibrational Energy (zpe) 12356.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12356.4 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/6-31+G**
ABC
0.73444 0.35780 0.26608

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.868
C2 0.000 0.744 -0.797
C3 0.000 -0.744 -0.797
H4 -0.913 1.251 -1.083
H5 0.913 1.251 -1.083
H6 0.913 -1.251 -1.083
H7 -0.913 -1.251 -1.083

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82361.82362.49122.49122.49122.4912
C21.82361.48801.08261.08262.21262.2126
C31.82361.48802.21262.21261.08261.0826
H42.49121.08262.21261.82513.09722.5023
H52.49121.08262.21261.82512.50233.0972
H62.49122.21261.08263.09722.50231.8251
H72.49122.21261.08262.50233.09721.8251

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 115.644
S1 C2 H5 115.644 S1 C3 C2 65.921
S1 C3 H6 115.644 S1 C3 H7 115.644
C2 S1 C3 48.159 C2 C3 H6 117.933
C2 C3 H7 117.933 C3 C2 H4 117.933
C3 C2 H5 117.933 H4 C2 H5 114.898
H6 C3 H7 114.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability