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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: mPW1PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-476.828416
Energy at 298.15K-476.832895
HF Energy-476.828416
Nuclear repulsion energy101.783160
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 mPW1PW91/6-311+G(3df,2p)
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 3142 3142 15.48      
2 A1 1497 1497 2.42      
3 A1 1160 1160 1.03      
4 A1 1048 1048 1.04      
5 A1 662 662 23.95      
6 A2 3223 3223 0.00      
7 A2 1195 1195 0.00      
8 A2 904 904 0.00      
9 B1 3237 3237 2.58      
10 B1 966 966 3.31      
11 B1 837 837 0.71      
12 B2 3140 3140 10.40      
13 B2 1471 1471 1.35      
14 B2 1082 1082 22.75      
15 B2 711 711 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 12138.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12138.1 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 mPW1PW91/6-311+G(3df,2p)
ABC
0.74204 0.36569 0.27144

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.858
C2 0.000 0.738 -0.788
C3 0.000 -0.738 -0.788
H4 -0.912 1.249 -1.066
H5 0.912 1.249 -1.066
H6 0.912 -1.249 -1.066
H7 -0.912 -1.249 -1.066

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80431.80432.46862.46862.46862.4686
C21.80431.47631.08171.08172.20392.2039
C31.80431.47632.20392.20391.08171.0817
H42.46861.08172.20391.82463.09292.4974
H52.46861.08172.20391.82462.49743.0929
H62.46862.20391.08173.09292.49741.8246
H72.46862.20391.08172.49743.09291.8246

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.852 S1 C2 H4 115.304
S1 C2 H5 115.304 S1 C3 C2 65.852
S1 C3 H6 115.304 S1 C3 H7 115.304
C2 S1 C3 48.297 C2 C3 H6 118.164
C2 C3 H7 118.164 C3 C2 H4 118.164
C3 C2 H5 118.164 H4 C2 H5 114.996
H6 C3 H7 114.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.217      
2 C -0.151      
3 C -0.151      
4 H 0.130      
5 H 0.130      
6 H 0.130      
7 H 0.130      


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 -1.902 1.902
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.174 0.000 0.000
y 0.000 -24.359 0.000
z 0.000 0.000 -26.312
Traceless
 xyz
x -0.839 0.000 0.000
y 0.000 1.883 0.000
z 0.000 0.000 -1.045
Polar
3z2-r2-2.090
x2-y2-1.815
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.575 0.000 0.000
y 0.000 6.044 0.000
z 0.000 0.000 7.463


<r2> (average value of r2) Å2
<r2> 55.888
(<r2>)1/2 7.476