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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CCSD(T)/6-31G(2df,p)

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)/6-31G(2df,p)
 hartrees
Energy at 0K-476.105842
Energy at 298.15K-476.110297
HF Energy-475.564218
Nuclear repulsion energy100.820296
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)/6-31G(2df,p)
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 3171 3171        
2 A1 1506 1506        
3 A1 1147 1147        
4 A1 1056 1056        
5 A1 649 649        
6 A2 3257 3257        
7 A2 1202 1202        
8 A2 906 906        
9 B1 3271 3271        
10 B1 965 965        
11 B1 836 836        
12 B2 3168 3168        
13 B2 1481 1481        
14 B2 1081 1081        
15 B2 685 685        

Unscaled Zero Point Vibrational Energy (zpe) 12191.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12191.1 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)/6-31G(2df,p)
ABC
0.73188 0.35725 0.26570

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

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 -0.800
C3 0.000 -0.744 -0.800
H4 -0.917 1.255 -1.074
H5 0.917 1.255 -1.074
H6 0.917 -1.255 -1.074
H7 -0.917 -1.255 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82641.82642.48762.48762.48762.4876
C21.82641.48891.08441.08442.21632.2163
C31.82641.48892.21632.21631.08441.0844
H42.48761.08442.21631.83323.10752.5092
H52.48761.08442.21631.83322.50923.1075
H62.48762.21631.08443.10752.50921.8332
H72.48762.21631.08442.50923.10751.8332

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.946 S1 C2 H4 115.038
S1 C2 H5 115.038 S1 C3 C2 65.946
S1 C3 H6 115.038 S1 C3 H7 115.038
C2 S1 C3 48.108 C2 C3 H6 118.062
C2 C3 H7 118.062 C3 C2 H4 118.062
C3 C2 H5 118.062 H4 C2 H5 115.397
H6 C3 H7 115.397
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability