return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H4S (Thiirane)

using model chemistry: CID/6-311G*

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/6-311G*
 hartrees
Energy at 0K-475.967172
Energy at 298.15K-475.971728
HF Energy-475.583052
Nuclear repulsion energy101.557309
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/6-311G*
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 3222 2994 13.53      
2 A1 1573 1462 3.55      
3 A1 1201 1116 3.85      
4 A1 1113 1034 0.39      
5 A1 687 639 28.98      
6 A2 3305 3071 0.00      
7 A2 1249 1160 0.00      
8 A2 965 897 0.00      
9 B1 3319 3084 8.06      
10 B1 1026 954 9.76      
11 B1 879 816 0.49      
12 B2 3216 2988 12.64      
13 B2 1538 1429 0.95      
14 B2 1156 1074 45.95      
15 B2 727 675 1.81      

Unscaled Zero Point Vibrational Energy (zpe) 12587.8 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 11695.3 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/6-311G*
ABC
0.73986 0.36358 0.26995

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.740 -0.791
C3 0.000 -0.740 -0.791
H4 -0.912 1.248 -1.071
H5 0.912 1.248 -1.071
H6 0.912 -1.248 -1.071
H7 -0.912 -1.248 -1.071

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80971.80972.47412.47412.47412.4741
C21.80971.48081.08061.08062.20532.2053
C31.80971.48082.20532.20531.08061.0806
H42.47411.08062.20531.82363.09102.4957
H52.47411.08062.20531.82362.49573.0910
H62.47412.20531.08063.09102.49571.8236
H72.47412.20531.08062.49573.09101.8236

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.850 S1 C2 H4 115.415
S1 C2 H5 115.415 S1 C3 C2 65.850
S1 C3 H6 115.415 S1 C3 H7 115.415
C2 S1 C3 48.301 C2 C3 H6 118.008
C2 C3 H7 118.008 C3 C2 H4 118.008
C3 C2 H5 118.008 H4 C2 H5 115.086
H6 C3 H7 115.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability