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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-476.818294
Energy at 298.15K-476.822772
HF Energy-476.818294
Nuclear repulsion energy101.533034
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 B1B95/6-311G**
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 3141 3016 15.63      
2 A1 1496 1437 4.15      
3 A1 1167 1120 3.04      
4 A1 1047 1005 0.27      
5 A1 667 640 26.15      
6 A2 3225 3096 0.00      
7 A2 1185 1138 0.00      
8 A2 907 871 0.00      
9 B1 3239 3110 7.17      
10 B1 968 929 9.41      
11 B1 838 805 0.77      
12 B2 3140 3014 13.69      
13 B2 1466 1407 1.26      
14 B2 1075 1032 42.89      
15 B2 706 677 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 12132.7 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 11648.6 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 B1B95/6-311G**
ABC
0.74202 0.36269 0.26985

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.738 -0.792
C3 0.000 -0.738 -0.792
H4 -0.913 1.248 -1.070
H5 0.913 1.248 -1.070
H6 0.913 -1.248 -1.070
H7 -0.913 -1.248 -1.070

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81101.81102.47462.47462.47462.4746
C21.81101.47601.08261.08262.20402.2040
C31.81101.47602.20402.20401.08261.0826
H42.47461.08262.20401.82703.09402.4970
H52.47461.08262.20401.82702.49703.0940
H62.47462.20401.08263.09402.49701.8270
H72.47462.20401.08262.49703.09401.8270

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.953 S1 C2 H4 115.231
S1 C2 H5 115.231 S1 C3 C2 65.953
S1 C3 H6 115.231 S1 C3 H7 115.231
C2 S1 C3 48.095 C2 C3 H6 118.134
C2 C3 H7 118.134 C3 C2 H4 118.134
C3 C2 H5 118.134 H4 C2 H5 115.077
H6 C3 H7 115.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.003      
2 C -0.353      
3 C -0.353      
4 H 0.177      
5 H 0.177      
6 H 0.177      
7 H 0.177      


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 -2.071 2.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.332 0.000 0.000
y 0.000 -24.442 0.000
z 0.000 0.000 -26.490
Traceless
 xyz
x -0.866 0.000 0.000
y 0.000 1.969 0.000
z 0.000 0.000 -1.103
Polar
3z2-r2-2.207
x2-y2-1.890
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.049 0.000 0.000
y 0.000 5.150 0.000
z 0.000 0.000 6.712


<r2> (average value of r2) Å2
<r2> 56.182
(<r2>)1/2 7.495