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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-475.583249
Energy at 298.15K-475.587836
HF Energy-475.583249
Nuclear repulsion energy101.621489
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 HF/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 3302 2987 21.18      
2 A1 1643 1486 4.87      
3 A1 1232 1115 6.78      
4 A1 1146 1037 0.01      
5 A1 671 607 51.78      
6 A2 3381 3058 0.00      
7 A2 1310 1185 0.00      
8 A2 992 897 0.00      
9 B1 3397 3073 14.19      
10 B1 1059 958 8.52      
11 B1 906 819 0.41      
12 B2 3295 2980 21.38      
13 B2 1604 1451 0.37      
14 B2 1202 1087 46.68      
15 B2 732 662 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 12936.2 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 11699.5 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 HF/6-311G*
ABC
0.74749 0.36172 0.26952

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.736 -0.795
C3 0.000 -0.736 -0.795
H4 -0.905 1.246 -1.067
H5 0.905 1.246 -1.067
H6 0.905 -1.246 -1.067
H7 -0.905 -1.246 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81451.81452.46892.46892.46892.4689
C21.81451.47151.07391.07392.19532.1953
C31.81451.47152.19532.19531.07391.0739
H42.46891.07392.19531.81083.08002.4915
H52.46891.07392.19531.81082.49153.0800
H62.46892.19531.07393.08002.49151.8108
H72.46892.19531.07392.49153.08001.8108

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.079 S1 C2 H4 115.043
S1 C2 H5 115.043 S1 C3 C2 66.079
S1 C3 H6 115.043 S1 C3 H7 115.043
C2 S1 C3 47.842 C2 C3 H6 118.352
C2 C3 H7 118.352 C3 C2 H4 118.352
C3 C2 H5 118.352 H4 C2 H5 114.930
H6 C3 H7 114.930
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.009      
2 C -0.512      
3 C -0.512      
4 H 0.258      
5 H 0.258      
6 H 0.258      
7 H 0.258      


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 -2.386 2.386
CHELPG        
AIM        
ESP 0.026 0.000 -2.419 2.420


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.762 0.000 0.000
y 0.000 -24.664 0.000
z 0.000 0.000 -26.908
Traceless
 xyz
x -0.976 0.000 0.000
y 0.000 2.171 0.000
z 0.000 0.000 -1.195
Polar
3z2-r2-2.390
x2-y2-2.098
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.842 0.000 0.000
y 0.000 4.974 0.000
z 0.000 0.000 6.652


<r2> (average value of r2) Å2
<r2> 56.356
(<r2>)1/2 7.507