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All results from a given calculation for C2H4S (Thiirane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-475.996041
Energy at 298.15K-476.000519
HF Energy-475.545954
Nuclear repulsion energy100.789620
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 CCSD(T)=FULL/6-31G*
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 3158 3065        
2 A1 1544 1499        
3 A1 1173 1139        
4 A1 1083 1051        
5 A1 660 641        
6 A2 3236 3141        
7 A2 1220 1184        
8 A2 934 906        
9 B1 3249 3154        
10 B1 992 963        
11 B1 859 833        
12 B2 3154 3061        
13 B2 1515 1471        
14 B2 1110 1077        
15 B2 686 666        

Unscaled Zero Point Vibrational Energy (zpe) 12286.1 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 11926.1 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 CCSD(T)=FULL/6-31G*
ABC
0.73297 0.35684 0.26563

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.869
C2 0.000 0.743 -0.798
C3 0.000 -0.743 -0.798
H4 -0.917 1.256 -1.084
H5 0.917 1.256 -1.084
H6 0.917 -1.256 -1.084
H7 -0.917 -1.256 -1.084

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82491.82492.49662.49662.49662.4966
C21.82491.48621.08891.08892.21772.2177
C31.82491.48622.21772.21771.08891.0889
H42.49661.08892.21771.83383.10972.5115
H52.49661.08892.21771.83382.51153.1097
H62.49662.21771.08893.10972.51151.8338
H72.49662.21771.08892.51153.10971.8338

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.970 S1 C2 H4 115.604
S1 C2 H5 115.604 S1 C3 C2 65.970
S1 C3 H6 115.604 S1 C3 H7 115.604
C2 S1 C3 48.060 C2 C3 H6 118.086
C2 C3 H7 118.086 C3 C2 H4 118.086
C3 C2 H5 118.086 H4 C2 H5 114.715
H6 C3 H7 114.715
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability