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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBEultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-476.495404
Energy at 298.15K-476.499793
HF Energy-476.495404
Nuclear repulsion energy100.290055
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 PBEPBEultrafine/6-31+G**
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 3065 3030 14.41      
2 A1 1455 1438 5.51      
3 A1 1126 1113 3.08      
4 A1 1015 1004 1.32      
5 A1 636 629 23.17      
6 A2 3147 3111 0.00      
7 A2 1151 1137 0.00      
8 A2 877 867 0.00      
9 B1 3160 3124 5.23      
10 B1 932 921 5.19      
11 B1 814 804 1.04      
12 B2 3065 3030 12.25      
13 B2 1429 1413 0.69      
14 B2 1034 1023 41.08      
15 B2 666 658 0.88      

Unscaled Zero Point Vibrational Energy (zpe) 11786.0 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 11651.7 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 PBEPBEultrafine/6-31+G**
ABC
0.72638 0.35311 0.26306

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.873
C2 0.000 0.745 -0.803
C3 0.000 -0.745 -0.803
H4 -0.923 1.264 -1.085
H5 0.923 1.264 -1.085
H6 0.923 -1.264 -1.085
H7 -0.923 -1.264 -1.085

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83481.83482.50662.50662.50662.5066
C21.83481.49091.09521.09522.22892.2289
C31.83481.49092.22892.22891.09521.0952
H42.50661.09522.22891.84533.12972.5277
H52.50661.09522.22891.84532.52773.1297
H62.50662.22891.09523.12972.52771.8453
H72.50662.22891.09522.52773.12971.8453

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.029 S1 C2 H4 115.293
S1 C2 H5 115.293 S1 C3 C2 66.029
S1 C3 H6 115.293 S1 C3 H7 115.293
C2 S1 C3 47.943 C2 C3 H6 118.254
C2 C3 H7 118.254 C3 C2 H4 118.254
C3 C2 H5 118.254 H4 C2 H5 114.810
H6 C3 H7 114.810
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.022      
2 C -0.397      
3 C -0.397      
4 H 0.204      
5 H 0.204      
6 H 0.204      
7 H 0.204      


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 -2.094 2.094
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.537 0.000 0.000
y 0.000 -24.602 0.000
z 0.000 0.000 -26.758
Traceless
 xyz
x -0.857 0.000 0.000
y 0.000 2.045 0.000
z 0.000 0.000 -1.189
Polar
3z2-r2-2.377
x2-y2-1.935
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.212 0.000 0.000
y 0.000 5.627 0.000
z 0.000 0.000 7.157


<r2> (average value of r2) Å2
<r2> 57.333
(<r2>)1/2 7.572