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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-471.119830
Energy at 298.15K-471.124340
HF Energy-471.071371
Nuclear repulsion energy100.624769
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 B2PLYP/STO-3G
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 3398 3398 0.07      
2 A1 1665 1665 3.00      
3 A1 1259 1259 0.84      
4 A1 1148 1148 0.00      
5 A1 814 814 4.83      
6 A2 3535 3535 0.00      
7 A2 1287 1287 0.00      
8 A2 984 984 0.00      
9 B1 3542 3542 2.49      
10 B1 1063 1063 0.01      
11 B1 906 906 0.03      
12 B2 3391 3391 0.50      
13 B2 1646 1646 0.36      
14 B2 1210 1210 15.20      
15 B2 853 853 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 13350.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13350.6 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 B2PLYP/STO-3G
ABC
0.70643 0.36398 0.26585

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.861
C2 0.000 0.763 -0.779
C3 0.000 -0.763 -0.779
H4 -0.916 1.271 -1.109
H5 0.916 1.271 -1.109
H6 0.916 -1.271 -1.109
H7 -0.916 -1.271 -1.109

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80921.80922.51742.51742.51742.5174
C21.80921.52571.09841.09842.25502.2550
C31.80921.52572.25502.25501.09841.0984
H42.51741.09842.25501.83243.13362.5421
H52.51741.09842.25501.83242.54213.1336
H62.51742.25501.09843.13362.54211.8324
H72.51742.25501.09842.54213.13361.8324

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.061 S1 C2 H4 117.866
S1 C2 H5 117.866 S1 C3 C2 65.061
S1 C3 H6 117.866 S1 C3 H7 117.866
C2 S1 C3 49.878 C2 C3 H6 117.559
C2 C3 H7 117.559 C3 C2 H4 117.559
C3 C2 H5 117.559 H4 C2 H5 113.048
H6 C3 H7 113.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.122      
2 C -0.212      
3 C -0.212      
4 H 0.075      
5 H 0.075      
6 H 0.075      
7 H 0.075      


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 -0.623 0.623
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.232 0.000 0.000
y 0.000 -22.673 0.000
z 0.000 0.000 -23.995
Traceless
 xyz
x 0.101 0.000 0.000
y 0.000 0.941 0.000
z 0.000 0.000 -1.042
Polar
3z2-r2-2.085
x2-y2-0.560
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.634 0.000 0.000
y 0.000 2.630 0.000
z 0.000 0.000 3.037


<r2> (average value of r2) Å2
<r2> 55.431
(<r2>)1/2 7.445