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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-476.658108
Energy at 298.15K-476.662503
HF Energy-476.658108
Nuclear repulsion energy98.117914
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 B3PW91/6-31G
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 3189 3054 5.07      
2 A1 1530 1465 2.26      
3 A1 1169 1119 2.35      
4 A1 1083 1037 4.38      
5 A1 597 572 23.27      
6 A2 3278 3140 0.00      
7 A2 1226 1174 0.00      
8 A2 900 862 0.00      
9 B1 3296 3157 4.81      
10 B1 935 896 5.68      
11 B1 865 828 1.62      
12 B2 3184 3050 6.31      
13 B2 1508 1445 5.69      
14 B2 1112 1065 44.53      
15 B2 610 584 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 12241.3 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 11723.5 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 B3PW91/6-31G
ABC
0.73617 0.32447 0.24755

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.913
C2 0.000 0.739 -0.849
C3 0.000 -0.739 -0.849
H4 -0.915 1.261 -1.104
H5 0.915 1.261 -1.104
H6 0.915 -1.261 -1.104
H7 -0.915 -1.261 -1.104

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.91121.91122.54952.54952.54952.5495
C21.91121.47801.08441.08442.21462.2146
C31.91121.47802.21462.21461.08441.0844
H42.54951.08442.21461.83083.11712.5228
H52.54951.08442.21461.83082.52283.1171
H62.54952.21461.08443.11712.52281.8308
H72.54952.21461.08442.52283.11711.8308

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.253 S1 C2 H4 113.776
S1 C2 H5 113.776 S1 C3 C2 67.253
S1 C3 H6 113.776 S1 C3 H7 113.776
C2 S1 C3 45.494 C2 C3 H6 118.800
C2 C3 H7 118.800 C3 C2 H4 118.800
C3 C2 H5 118.800 H4 C2 H5 115.164
H6 C3 H7 115.164
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.098      
2 C -0.488      
3 C -0.488      
4 H 0.219      
5 H 0.219      
6 H 0.219      
7 H 0.219      


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 -2.500 2.500
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.114 0.000 0.000
y 0.000 -24.185 0.000
z 0.000 0.000 -26.529
Traceless
 xyz
x -0.758 0.000 0.000
y 0.000 2.137 0.000
z 0.000 0.000 -1.379
Polar
3z2-r2-2.758
x2-y2-1.930
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.721 0.000 0.000
y 0.000 4.763 0.000
z 0.000 0.000 6.646


<r2> (average value of r2) Å2
<r2> 59.144
(<r2>)1/2 7.690