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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-476.671849
Energy at 298.15K-476.676102
HF Energy-476.671849
Nuclear repulsion energy96.439536
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 BLYP/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 3095 3072 6.59      
2 A1 1492 1480 3.30      
3 A1 1119 1110 2.93      
4 A1 1037 1029 1.74      
5 A1 539 535 21.45      
6 A2 3178 3154 0.00      
7 A2 1194 1185 0.00      
8 A2 855 849 0.00      
9 B1 3197 3173 10.92      
10 B1 890 883 6.41      
11 B1 835 829 0.58      
12 B2 3093 3069 10.30      
13 B2 1477 1466 2.73      
14 B2 1053 1045 39.22      
15 B2 535 531 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 11793.9 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 11704.2 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 BLYP/6-31G
ABC
0.72511 0.30912 0.23765

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.936
C2 0.000 0.744 -0.874
C3 0.000 -0.744 -0.874
H4 -0.922 1.274 -1.123
H5 0.922 1.274 -1.123
H6 0.922 -1.274 -1.123
H7 -0.922 -1.274 -1.123

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.95711.95712.59072.59072.59072.5907
C21.95711.48801.09181.09182.23212.2321
C31.95711.48802.23212.23211.09181.0918
H42.59071.09182.23211.84323.14432.5474
H52.59071.09182.23211.84322.54743.1443
H62.59072.23211.09183.14432.54741.8432
H72.59072.23211.09182.54743.14431.8432

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.657 S1 C2 H4 113.295
S1 C2 H5 113.295 S1 C3 C2 67.657
S1 C3 H6 113.295 S1 C3 H7 113.295
C2 S1 C3 44.687 C2 C3 H6 119.024
C2 C3 H7 119.024 C3 C2 H4 119.024
C3 C2 H5 119.024 H4 C2 H5 115.158
H6 C3 H7 115.158
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.047      
2 C -0.371      
3 C -0.371      
4 H 0.174      
5 H 0.174      
6 H 0.174      
7 H 0.174      


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 -2.482 2.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.371 0.000 0.000
y 0.000 -24.407 0.000
z 0.000 0.000 -26.457
Traceless
 xyz
x -0.939 0.000 0.000
y 0.000 2.007 0.000
z 0.000 0.000 -1.067
Polar
3z2-r2-2.135
x2-y2-1.964
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.790 0.000 0.000
y 0.000 4.851 0.000
z 0.000 0.000 6.850


<r2> (average value of r2) Å2
<r2> 60.842
(<r2>)1/2 7.800