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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-475.717892
Energy at 298.15K-475.722315
HF Energy-475.476897
Nuclear repulsion energy97.558181
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 3227 3018 4.06      
2 A1 1573 1471 2.28      
3 A1 1179 1102 3.24      
4 A1 1119 1047 3.30      
5 A1 588 550 23.29      
6 A2 3308 3094 0.00      
7 A2 1266 1184 0.00      
8 A2 922 863 0.00      
9 B1 3325 3109 5.91      
10 B1 951 890 4.35      
11 B1 887 830 0.89      
12 B2 3217 3008 5.79      
13 B2 1550 1450 3.81      
14 B2 1150 1075 44.98      
15 B2 613 573 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 12437.0 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 11631.1 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 CID/6-31G
ABC
0.73236 0.31924 0.24407

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 0.921
C2 0.000 0.742 -0.856
C3 0.000 -0.742 -0.856
H4 -0.915 1.262 -1.116
H5 0.915 1.262 -1.116
H6 0.915 -1.262 -1.116
H7 -0.915 -1.262 -1.116

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.92631.92632.56522.56522.56522.5652
C21.92631.48431.08421.08422.21862.2186
C31.92631.48432.21862.21861.08421.0842
H42.56521.08422.21861.83063.11812.5242
H52.56521.08422.21861.83062.52423.1181
H62.56522.21861.08423.11812.52421.8306
H72.56522.21861.08422.52423.11811.8306

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.338 S1 C2 H4 113.934
S1 C2 H5 113.934 S1 C3 C2 67.338
S1 C3 H6 113.934 S1 C3 H7 113.934
C2 S1 C3 45.323 C2 C3 H6 118.657
C2 C3 H7 118.657 C3 C2 H4 118.657
C3 C2 H5 118.657 H4 C2 H5 115.177
H6 C3 H7 115.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability