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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-476.814953
Energy at 298.15K-476.819435
HF Energy-476.814953
Nuclear repulsion energy101.342508
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 mPW1PW91/6-311G**
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 3149 3013 14.90      
2 A1 1504 1439 3.82      
3 A1 1168 1117 3.16      
4 A1 1054 1008 0.35      
5 A1 664 635 27.41      
6 A2 3232 3092 0.00      
7 A2 1194 1143 0.00      
8 A2 912 873 0.00      
9 B1 3246 3106 6.12      
10 B1 973 930 9.47      
11 B1 845 808 0.84      
12 B2 3147 3011 13.04      
13 B2 1474 1410 1.56      
14 B2 1083 1037 43.86      
15 B2 700 670 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 12172.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11645.5 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 mPW1PW91/6-311G**
ABC
0.74084 0.36078 0.26867

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.864
C2 0.000 0.738 -0.795
C3 0.000 -0.738 -0.795
H4 -0.914 1.250 -1.072
H5 0.914 1.250 -1.072
H6 0.914 -1.250 -1.072
H7 -0.914 -1.250 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81571.81572.47882.47882.47882.4788
C21.81571.47701.08341.08342.20592.2059
C31.81571.47702.20592.20591.08341.0834
H42.47881.08342.20591.82803.09692.4999
H52.47881.08342.20591.82802.49993.0969
H62.47882.20591.08343.09692.49991.8280
H72.47882.20591.08342.49993.09691.8280

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.001 S1 C2 H4 115.184
S1 C2 H5 115.184 S1 C3 C2 66.001
S1 C3 H6 115.184 S1 C3 H7 115.184
C2 S1 C3 47.998 C2 C3 H6 118.170
C2 C3 H7 118.170 C3 C2 H4 118.170
C3 C2 H5 118.170 H4 C2 H5 115.061
H6 C3 H7 115.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.012      
2 C -0.349      
3 C -0.349      
4 H 0.178      
5 H 0.178      
6 H 0.178      
7 H 0.178      


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 -2.120 2.120
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.341 0.000 0.000
y 0.000 -24.427 0.000
z 0.000 0.000 -26.509
Traceless
 xyz
x -0.873 0.000 0.000
y 0.000 1.998 0.000
z 0.000 0.000 -1.125
Polar
3z2-r2-2.250
x2-y2-1.914
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.020 0.000 0.000
y 0.000 5.135 0.000
z 0.000 0.000 6.713


<r2> (average value of r2) Å2
<r2> 56.341
(<r2>)1/2 7.506