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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-475.233147
Energy at 298.15K-475.237507
Nuclear repulsion energy98.379225
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 LSDA/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 3110 3046 3.24      
2 A1 1472 1442 1.71      
3 A1 1165 1141 1.95      
4 A1 1042 1021 6.37      
5 A1 612 600 17.65      
6 A2 3198 3133 0.00      
7 A2 1177 1153 0.00      
8 A2 863 845 0.00      
9 B1 3215 3150 2.35      
10 B1 907 889 7.61      
11 B1 837 820 2.07      
12 B2 3106 3043 3.56      
13 B2 1451 1422 8.94      
14 B2 1067 1045 44.99      
15 B2 611 599 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 11916.3 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 11674.4 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 LSDA/6-31G
ABC
0.73585 0.32798 0.24992

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.908
C2 0.000 0.737 -0.842
C3 0.000 -0.737 -0.842
H4 -0.922 1.264 -1.105
H5 0.922 1.264 -1.105
H6 0.922 -1.264 -1.105
H7 -0.922 -1.264 -1.105

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.89881.89882.54932.54932.54932.5493
C21.89881.47441.09391.09392.21892.2189
C31.89881.47442.21892.21891.09391.0939
H42.54931.09392.21891.84403.12892.5278
H52.54931.09392.21891.84402.52783.1289
H62.54932.21891.09393.12892.52781.8440
H72.54932.21891.09392.52783.12891.8440

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.155 S1 C2 H4 114.106
S1 C2 H5 114.106 S1 C3 C2 67.155
S1 C3 H6 114.106 S1 C3 H7 114.106
C2 S1 C3 45.689 C2 C3 H6 118.782
C2 C3 H7 118.782 C3 C2 H4 118.782
C3 C2 H5 118.782 H4 C2 H5 114.886
H6 C3 H7 114.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.110      
2 C -0.496      
3 C -0.496      
4 H 0.220      
5 H 0.220      
6 H 0.220      
7 H 0.220      


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 -2.387 2.387
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.124 0.000 0.000
y 0.000 -24.208 0.000
z 0.000 0.000 -26.574
Traceless
 xyz
x -0.732 0.000 0.000
y 0.000 2.141 0.000
z 0.000 0.000 -1.409
Polar
3z2-r2-2.817
x2-y2-1.916
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.820 0.000 0.000
y 0.000 4.793 0.000
z 0.000 0.000 6.521


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000