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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBEPBEultrafine/6-31G*

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/6-31G*
 hartrees
Energy at 0K-476.485943
Energy at 298.15K-476.490336
HF Energy-476.485943
Nuclear repulsion energy100.275018
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/6-31G*
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 3073 3023 13.87      
2 A1 1475 1451 6.11      
3 A1 1139 1121 2.66      
4 A1 1022 1005 0.52      
5 A1 642 631 21.88      
6 A2 3151 3099 0.00      
7 A2 1163 1144 0.00      
8 A2 887 872 0.00      
9 B1 3165 3113 7.60      
10 B1 944 929 6.67      
11 B1 819 806 0.65      
12 B2 3074 3023 14.28      
13 B2 1451 1427 0.26      
14 B2 1040 1023 36.37      
15 B2 668 657 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 11856.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 11660.7 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/6-31G*
ABC
0.72728 0.35271 0.26292

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.874
C2 0.000 0.745 -0.803
C3 0.000 -0.745 -0.803
H4 -0.922 1.264 -1.086
H5 0.922 1.264 -1.086
H6 0.922 -1.264 -1.086
H7 -0.922 -1.264 -1.086

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83531.83532.50832.50832.50832.5083
C21.83531.48921.09581.09582.22852.2285
C31.83531.48922.22852.22851.09581.0958
H42.50831.09582.22851.84453.12992.5286
H52.50831.09582.22851.84452.52863.1299
H62.50832.22851.09583.12992.52861.8445
H72.50832.22851.09582.52863.12991.8445

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.064 S1 C2 H4 115.364
S1 C2 H5 115.364 S1 C3 C2 66.064
S1 C3 H6 115.364 S1 C3 H7 115.364
C2 S1 C3 47.872 C2 C3 H6 118.313
C2 C3 H7 118.313 C3 C2 H4 118.313
C3 C2 H5 118.313 H4 C2 H5 114.635
H6 C3 H7 114.635
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.004      
2 C -0.408      
3 C -0.408      
4 H 0.203      
5 H 0.203      
6 H 0.203      
7 H 0.203      


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 -2.093 2.093
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.954 0.000 0.000
y 0.000 -24.099 -0.012
z 0.000 -0.012 -26.035
Traceless
 xyz
x -0.887 0.000 0.000
y 0.000 1.896 -0.012
z 0.000 -0.012 -1.009
Polar
3z2-r2-2.017
x2-y2-1.855
xy0.000
xz0.000
yz-0.012


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.133 0.000 0.000
y 0.000 4.955 -0.007
z 0.000 -0.007 6.342


<r2> (average value of r2) Å2
<r2> 56.979
(<r2>)1/2 7.548