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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-475.589960
Energy at 298.15K-475.594549
HF Energy-475.589960
Nuclear repulsion energy101.632458
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 3286 2985 17.33      
2 A1 1630 1480 4.33      
3 A1 1228 1116 5.84      
4 A1 1142 1038 0.00      
5 A1 671 609 51.41      
6 A2 3365 3057 0.00      
7 A2 1299 1180 0.00      
8 A2 985 895 0.00      
9 B1 3381 3072 9.48      
10 B1 1052 955 7.51      
11 B1 901 818 0.45      
12 B2 3279 2979 16.02      
13 B2 1592 1446 0.77      
14 B2 1198 1088 44.13      
15 B2 734 667 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 12869.8 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 11692.3 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 HF/6-311G**
ABC
0.74719 0.36194 0.26970

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 -0.907 1.244 -1.066
H5 0.907 1.244 -1.066
H6 0.907 -1.244 -1.066
H7 -0.907 -1.244 -1.066

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81391.81392.46842.46842.46842.4684
C21.81391.47211.07451.07452.19512.1951
C31.81391.47212.19512.19511.07451.0745
H42.46841.07452.19511.81393.07972.4888
H52.46841.07452.19511.81392.48883.0797
H62.46842.19511.07453.07972.48881.8139
H72.46842.19511.07452.48883.07971.8139

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.059 S1 C2 H4 115.014
S1 C2 H5 115.014 S1 C3 C2 66.059
S1 C3 H6 115.014 S1 C3 H7 115.014
C2 S1 C3 47.882 C2 C3 H6 118.235
C2 C3 H7 118.235 C3 C2 H4 118.235
C3 C2 H5 118.235 H4 C2 H5 115.135
H6 C3 H7 115.135
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.044      
2 C -0.279      
3 C -0.279      
4 H 0.151      
5 H 0.151      
6 H 0.151      
7 H 0.151      


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 -2.363 2.363
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.732 0.000 0.000
y 0.000 -24.639 0.000
z 0.000 0.000 -26.887
Traceless
 xyz
x -0.969 0.000 0.000
y 0.000 2.170 0.000
z 0.000 0.000 -1.201
Polar
3z2-r2-2.402
x2-y2-2.093
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.882 0.000 0.000
y 0.000 5.034 0.000
z 0.000 0.000 6.713


<r2> (average value of r2) Å2
<r2> 56.323
(<r2>)1/2 7.505