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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: mPW1PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-476.817639
Energy at 298.15K-476.822110
HF Energy-476.817639
Nuclear repulsion energy101.143882
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 mPW1PW91/TZVP
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 3151 3006 12.76      
2 A1 1504 1435 3.44      
3 A1 1160 1106 2.80      
4 A1 1053 1004 0.66      
5 A1 658 628 26.97      
6 A2 3235 3086 0.00      
7 A2 1199 1143 0.00      
8 A2 902 861 0.00      
9 B1 3249 3100 4.83      
10 B1 964 919 4.72      
11 B1 844 805 0.63      
12 B2 3150 3005 11.50      
13 B2 1477 1409 1.40      
14 B2 1079 1030 46.76      
15 B2 695 663 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 12159.6 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 11600.2 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 mPW1PW91/TZVP
ABC
0.74143 0.35818 0.26726

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.738 -0.798
C3 0.000 -0.738 -0.798
H4 -0.913 1.250 -1.074
H5 0.913 1.250 -1.074
H6 0.913 -1.250 -1.074
H7 -0.913 -1.250 -1.074

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82201.82202.48302.48302.48302.4830
C21.82201.47621.08261.08262.20512.2051
C31.82201.47622.20512.20511.08261.0826
H42.48301.08262.20511.82673.09612.4998
H52.48301.08262.20511.82672.49983.0961
H62.48302.20511.08263.09612.49981.8267
H72.48302.20511.08262.49983.09611.8267

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.101 S1 C2 H4 115.105
S1 C2 H5 115.105 S1 C3 C2 66.101
S1 C3 H6 115.105 S1 C3 H7 115.105
C2 S1 C3 47.798 C2 C3 H6 118.211
C2 C3 H7 118.211 C3 C2 H4 118.211
C3 C2 H5 118.211 H4 C2 H5 115.051
H6 C3 H7 115.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.104      
2 C -0.285      
3 C -0.285      
4 H 0.168      
5 H 0.168      
6 H 0.168      
7 H 0.168      


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 -2.101 2.101
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.042 0.000 0.000
y 0.000 -24.276 0.000
z 0.000 0.000 -26.252
Traceless
 xyz
x -0.778 0.000 0.000
y 0.000 1.871 0.000
z 0.000 0.000 -1.093
Polar
3z2-r2-2.187
x2-y2-1.766
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.381 0.000 0.000
y 0.000 5.600 0.000
z 0.000 0.000 6.837


<r2> (average value of r2) Å2
<r2> 56.366
(<r2>)1/2 7.508