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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-476.720571
Energy at 298.15K-476.724908
HF Energy-476.720571
Nuclear repulsion energy99.387160
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 3058 3035 14.07      
2 A1 1472 1461 6.41      
3 A1 1116 1108 3.65      
4 A1 1018 1010 0.07      
5 A1 597 592 23.42      
6 A2 3137 3113 0.00      
7 A2 1167 1158 0.00      
8 A2 872 865 0.00      
9 B1 3152 3127 10.87      
10 B1 927 920 5.55      
11 B1 816 810 0.44      
12 B2 3059 3035 16.77      
13 B2 1450 1439 0.03      
14 B2 1035 1027 32.18      
15 B2 615 610 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 11744.8 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 11654.3 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
0.72620 0.34242 0.25694

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 0.888
C2 0.000 0.745 -0.819
C3 0.000 -0.745 -0.819
H4 -0.921 1.267 -1.094
H5 0.921 1.267 -1.094
H6 0.921 -1.267 -1.094
H7 -0.921 -1.267 -1.094

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.86241.86242.52582.52582.52582.5258
C21.86241.49031.09341.09342.22972.2297
C31.86241.49032.22972.22971.09341.0934
H42.52581.09342.22971.84143.13222.5338
H52.52581.09342.22971.84142.53383.1322
H62.52582.22971.09343.13222.53381.8414
H72.52582.22971.09342.53383.13221.8414

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.416 S1 C2 H4 114.915
S1 C2 H5 114.915 S1 C3 C2 66.416
S1 C3 H6 114.915 S1 C3 H7 114.915
C2 S1 C3 47.168 C2 C3 H6 118.502
C2 C3 H7 118.502 C3 C2 H4 118.502
C3 C2 H5 118.502 H4 C2 H5 114.723
H6 C3 H7 114.723
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 -0.029      
2 C -0.257      
3 C -0.257      
4 H 0.136      
5 H 0.136      
6 H 0.136      
7 H 0.136      


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 -2.128 2.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.136 0.000 0.000
y 0.000 -24.213 0.000
z 0.000 0.000 -26.031
Traceless
 xyz
x -1.014 0.000 0.000
y 0.000 1.871 0.000
z 0.000 0.000 -0.857
Polar
3z2-r2-1.714
x2-y2-1.924
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.162 0.000 0.000
y 0.000 5.005 0.000
z 0.000 0.000 6.505


<r2> (average value of r2) Å2
<r2> 57.823
(<r2>)1/2 7.604