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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-476.753267
Energy at 298.15K-476.757732
HF Energy-476.753267
Nuclear repulsion energy101.126571
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 B3PW91/6-311G**
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 3130 3015 15.33      
2 A1 1496 1440 3.96      
3 A1 1159 1116 3.15      
4 A1 1047 1009 0.38      
5 A1 655 631 26.65      
6 A2 3212 3093 0.00      
7 A2 1187 1144 0.00      
8 A2 906 873 0.00      
9 B1 3226 3107 6.58      
10 B1 966 930 9.72      
11 B1 841 810 0.82      
12 B2 3128 3013 13.64      
13 B2 1467 1412 1.51      
14 B2 1076 1036 43.73      
15 B2 689 664 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 12092.5 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 11646.3 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 B3PW91/6-311G**
ABC
0.73889 0.35885 0.26740

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.866
C2 0.000 0.739 -0.797
C3 0.000 -0.739 -0.797
H4 -0.915 1.252 -1.074
H5 0.915 1.252 -1.074
H6 0.915 -1.252 -1.074
H7 -0.915 -1.252 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82041.82042.48422.48422.48422.4842
C21.82041.47871.08491.08492.20912.2091
C31.82041.47872.20912.20911.08491.0849
H42.48421.08492.20911.82993.10162.5042
H52.48421.08492.20911.82992.50423.1016
H62.48422.20911.08493.10162.50421.8299
H72.48422.20911.08492.50423.10161.8299

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.037 S1 C2 H4 115.177
S1 C2 H5 115.177 S1 C3 C2 66.037
S1 C3 H6 115.177 S1 C3 H7 115.177
C2 S1 C3 47.926 C2 C3 H6 118.206
C2 C3 H7 118.206 C3 C2 H4 118.206
C3 C2 H5 118.206 H4 C2 H5 115.003
H6 C3 H7 115.003
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.012      
2 C -0.348      
3 C -0.348      
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 -2.106 2.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.361 0.000 0.000
y 0.000 -24.445 0.000
z 0.000 0.000 -26.502
Traceless
 xyz
x -0.887 0.000 0.000
y 0.000 1.986 0.000
z 0.000 0.000 -1.099
Polar
3z2-r2-2.198
x2-y2-1.915
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.036 0.000 0.000
y 0.000 5.159 0.000
z 0.000 0.000 6.763


<r2> (average value of r2) Å2
<r2> 56.526
(<r2>)1/2 7.518