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: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-476.560197
Energy at 298.15K-476.564679
HF Energy-476.560197
Nuclear repulsion energy101.286153
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3162 3018 11.77      
2 A1 1513 1444 4.84      
3 A1 1175 1122 2.67      
4 A1 1058 1010 0.65      
5 A1 673 642 25.30      
6 A2 3248 3100 0.00      
7 A2 1197 1142 0.00      
8 A2 913 871 0.00      
9 B1 3261 3112 4.64      
10 B1 976 931 5.43      
11 B1 843 804 0.81      
12 B2 3161 3016 11.66      
13 B2 1482 1414 0.65      
14 B2 1086 1036 36.22      
15 B2 712 679 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 12229.3 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 11670.5 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 HSEh1PBE/6-31G**
ABC
0.73815 0.36109 0.26857

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.864
C2 0.000 0.740 -0.793
C3 0.000 -0.740 -0.793
H4 -0.915 1.253 -1.074
H5 0.915 1.253 -1.074
H6 0.915 -1.253 -1.074
H7 -0.915 -1.253 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81461.81462.48272.48272.48272.4827
C21.81461.47931.08641.08642.21082.2108
C31.81461.47932.21082.21081.08641.0864
H42.48271.08642.21081.83053.10362.5063
H52.48271.08642.21081.83052.50633.1036
H62.48272.21081.08643.10362.50631.8305
H72.48272.21081.08642.50633.10361.8305

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.945 S1 C2 H4 115.393
S1 C2 H5 115.393 S1 C3 C2 65.945
S1 C3 H6 115.393 S1 C3 H7 115.393
C2 S1 C3 48.110 C2 C3 H6 118.205
C2 C3 H7 118.205 C3 C2 H4 118.205
C3 C2 H5 118.205 H4 C2 H5 114.800
H6 C3 H7 114.800
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.006      
2 C -0.359      
3 C -0.359      
4 H 0.178      
5 H 0.178      
6 H 0.178      
7 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.118 2.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.901 0.000 0.000
y 0.000 -24.022 0.000
z 0.000 0.000 -26.067
Traceless
 xyz
x -0.857 0.000 0.000
y 0.000 1.963 0.000
z 0.000 0.000 -1.106
Polar
3z2-r2-2.211
x2-y2-1.880
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.090 0.000 0.000
y 0.000 4.904 0.000
z 0.000 0.000 6.258


<r2> (average value of r2) Å2
<r2> 56.123
(<r2>)1/2 7.491