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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-475.913347
Energy at 298.15K-475.917904
HF Energy-475.546623
Nuclear repulsion energy101.515675
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 CID/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 3249 3002 10.48      
2 A1 1589 1468 4.71      
3 A1 1213 1121 3.63      
4 A1 1119 1034 0.53      
5 A1 693 640 27.62      
6 A2 3329 3075 0.00      
7 A2 1257 1161 0.00      
8 A2 965 892 0.00      
9 B1 3342 3087 5.60      
10 B1 1028 949 4.70      
11 B1 881 814 0.43      
12 B2 3244 2996 11.10      
13 B2 1556 1437 0.29      
14 B2 1159 1071 37.50      
15 B2 737 680 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 12680.4 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 11712.9 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 CID/6-31G*
ABC
0.74039 0.36304 0.26966

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.740 -0.790
C3 0.000 -0.740 -0.790
H4 -0.911 1.249 -1.075
H5 0.911 1.249 -1.075
H6 0.911 -1.249 -1.075
H7 -0.911 -1.249 -1.075

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81001.81002.47852.47852.47852.4785
C21.81001.47931.08201.08202.20632.2063
C31.81001.47932.20632.20631.08201.0820
H42.47851.08202.20631.82163.09242.4990
H52.47851.08202.20631.82162.49903.0924
H62.47852.20631.08203.09242.49901.8216
H72.47852.20631.08202.49903.09241.8216

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.880 S1 C2 H4 115.658
S1 C2 H5 115.658 S1 C3 C2 65.880
S1 C3 H6 115.658 S1 C3 H7 115.658
C2 S1 C3 48.240 C2 C3 H6 118.110
C2 C3 H7 118.110 C3 C2 H4 118.110
C3 C2 H5 118.110 H4 C2 H5 114.657
H6 C3 H7 114.657
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability