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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/3-21G

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/3-21G
 hartrees
Energy at 0K-474.083156
Energy at 298.15K-474.087462
HF Energy-474.000868
Nuclear repulsion energy96.937963
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/3-21G
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 3207 3207 2.83      
2 A1 1545 1545 2.95      
3 A1 1115 1115 0.79      
4 A1 1072 1072 4.56      
5 A1 546 546 22.04      
6 A2 3295 3295 0.00      
7 A2 1242 1242 0.00      
8 A2 843 843 0.00      
9 B1 3314 3314 1.23      
10 B1 911 911 1.61      
11 B1 866 866 4.09      
12 B2 3203 3203 3.32      
13 B2 1525 1525 5.78      
14 B2 1093 1093 43.77      
15 B2 553 553 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 12164.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12164.8 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/3-21G
ABC
0.73524 0.31124 0.23985

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.933
C2 0.000 0.741 -0.872
C3 0.000 -0.741 -0.872
H4 -0.919 1.256 -1.114
H5 0.919 1.256 -1.114
H6 0.919 -1.256 -1.114
H7 -0.919 -1.256 -1.114

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.95111.95112.57132.57132.57132.5713
C21.95111.48141.08081.08082.21112.2111
C31.95111.48142.21112.21111.08081.0808
H42.57131.08082.21111.83763.11212.5117
H52.57131.08082.21111.83762.51173.1121
H62.57132.21111.08083.11212.51171.8376
H72.57132.21111.08082.51173.11211.8376

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.689 S1 C2 H4 112.835
S1 C2 H5 112.835 S1 C3 C2 67.689
S1 C3 H6 112.835 S1 C3 H7 112.835
C2 S1 C3 44.622 C2 C3 H6 118.466
C2 C3 H7 118.466 C3 C2 H4 118.466
C3 C2 H5 118.466 H4 C2 H5 116.447
H6 C3 H7 116.447
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.101      
2 C -0.548      
3 C -0.548      
4 H 0.249      
5 H 0.249      
6 H 0.249      
7 H 0.249      


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 -2.417 2.417
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.575 0.000 0.000
y 0.000 -24.811 0.000
z 0.000 0.000 -26.975
Traceless
 xyz
x -0.682 0.000 0.000
y 0.000 1.964 0.000
z 0.000 0.000 -1.283
Polar
3z2-r2-2.565
x2-y2-1.764
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.337 0.000 0.000
y 0.000 4.508 0.000
z 0.000 0.000 6.598


<r2> (average value of r2) Å2
<r2> 60.600
(<r2>)1/2 7.785