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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-471.373998
Energy at 298.15K-471.378501
HF Energy-471.373998
Nuclear repulsion energy100.836165
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 B3PW91/STO-3G
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 3374 2986 0.06      
2 A1 1646 1457 2.58      
3 A1 1258 1114 0.15      
4 A1 1141 1010 0.12      
5 A1 821 726 5.44      
6 A2 3511 3107 0.00      
7 A2 1268 1122 0.00      
8 A2 979 866 0.00      
9 B1 3518 3114 1.60      
10 B1 1056 935 0.03      
11 B1 901 797 0.18      
12 B2 3369 2981 0.71      
13 B2 1626 1439 0.01      
14 B2 1197 1059 17.97      
15 B2 855 757 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 13259.6 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 11734.7 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 B3PW91/STO-3G
ABC
0.70927 0.36566 0.26711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.859
C2 0.000 0.761 -0.777
C3 0.000 -0.761 -0.777
H4 -0.916 1.269 -1.108
H5 0.916 1.269 -1.108
H6 0.916 -1.269 -1.108
H7 -0.916 -1.269 -1.108

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80441.80442.51372.51372.51372.5137
C21.80441.52171.09841.09842.25152.2515
C31.80441.52172.25152.25151.09841.0984
H42.51371.09842.25151.83123.13012.5385
H52.51371.09842.25151.83122.53853.1301
H62.51372.25151.09843.13012.53851.8312
H72.51372.25151.09842.53853.13011.8312

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.061 S1 C2 H4 117.930
S1 C2 H5 117.930 S1 C3 C2 65.061
S1 C3 H6 117.930 S1 C3 H7 117.930
C2 S1 C3 49.878 C2 C3 H6 117.575
C2 C3 H7 117.575 C3 C2 H4 117.575
C3 C2 H5 117.575 H4 C2 H5 112.947
H6 C3 H7 112.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.116      
2 C -0.231      
3 C -0.231      
4 H 0.087      
5 H 0.087      
6 H 0.087      
7 H 0.087      


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 -0.696 0.696
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.078 0.000 0.000
y 0.000 -22.522 0.000
z 0.000 0.000 -23.897
Traceless
 xyz
x 0.132 0.000 0.000
y 0.000 0.965 0.000
z 0.000 0.000 -1.097
Polar
3z2-r2-2.194
x2-y2-0.556
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.628 0.000 0.000
y 0.000 2.608 0.000
z 0.000 0.000 3.028


<r2> (average value of r2) Å2
<r2> 55.179
(<r2>)1/2 7.428