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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP=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 B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-476.527155
Energy at 298.15K-476.531626
HF Energy-476.393627
Nuclear repulsion energy100.818183
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 B2PLYP=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 3179 3015 11.73      
2 A1 1548 1468 5.92      
3 A1 1176 1115 3.55      
4 A1 1079 1023 0.32      
5 A1 650 617 25.40      
6 A2 3261 3092 0.00      
7 A2 1225 1161 0.00      
8 A2 932 884 0.00      
9 B1 3274 3105 6.35      
10 B1 990 939 5.45      
11 B1 859 815 0.42      
12 B2 3177 3013 12.24      
13 B2 1520 1442 0.13      
14 B2 1107 1050 37.30      
15 B2 682 647 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 12329.1 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 11692.9 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 B2PLYP=FULL/6-31G*
ABC
0.73794 0.35548 0.26538

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.740 -0.801
C3 0.000 -0.740 -0.801
H4 -0.915 1.253 -1.081
H5 0.915 1.253 -1.081
H6 0.915 -1.253 -1.081
H7 -0.915 -1.253 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82831.82832.49292.49292.49292.4929
C21.82831.48011.08521.08522.21052.2105
C31.82831.48012.21052.21051.08521.0852
H42.49291.08522.21051.82923.10242.5058
H52.49291.08522.21051.82922.50583.1024
H62.49292.21051.08523.10242.50581.8292
H72.49292.21051.08522.50583.10241.8292

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.124 S1 C2 H4 115.268
S1 C2 H5 115.268 S1 C3 C2 66.124
S1 C3 H6 115.268 S1 C3 H7 115.268
C2 S1 C3 47.752 C2 C3 H6 118.202
C2 C3 H7 118.202 C3 C2 H4 118.202
C3 C2 H5 118.202 H4 C2 H5 114.872
H6 C3 H7 114.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability