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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-475.577504
Energy at 298.15K-475.582069
HF Energy-475.577504
Nuclear repulsion energy101.136253
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 HF/aug-cc-pVDZ
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 3293 2999 19.22      
2 A1 1614 1470 2.69      
3 A1 1222 1113 3.27      
4 A1 1130 1029 0.06      
5 A1 659 600 47.95      
6 A2 3377 3075 0.00      
7 A2 1291 1175 0.00      
8 A2 965 879 0.00      
9 B1 3393 3090 4.58      
10 B1 1032 940 2.11      
11 B1 885 806 0.63      
12 B2 3285 2992 14.63      
13 B2 1574 1434 0.61      
14 B2 1173 1069 27.42      
15 B2 719 655 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 12806.5 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 11661.6 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 HF/aug-cc-pVDZ
ABC
0.74350 0.35729 0.26697

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.868
C2 0.000 0.737 -0.801
C3 0.000 -0.737 -0.801
H4 -0.912 1.249 -1.070
H5 0.912 1.249 -1.070
H6 0.912 -1.249 -1.070
H7 -0.912 -1.249 -1.070

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82491.82492.47932.47932.47932.4793
C21.82491.47381.07991.07992.20162.2016
C31.82491.47382.20162.20161.07991.0799
H42.47931.07992.20161.82463.09302.4975
H52.47931.07992.20161.82462.49753.0930
H62.47932.20161.07993.09302.49751.8246
H72.47932.20161.07992.49753.09301.8246

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.185 S1 C2 H4 114.751
S1 C2 H5 114.751 S1 C3 C2 66.185
S1 C3 H6 114.751 S1 C3 H7 114.751
C2 S1 C3 47.631 C2 C3 H6 118.294
C2 C3 H7 118.294 C3 C2 H4 118.294
C3 C2 H5 118.294 H4 C2 H5 115.291
H6 C3 H7 115.291
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.097      
2 C 0.459      
3 C 0.459      
4 H -0.253      
5 H -0.253      
6 H -0.253      
7 H -0.253      


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 -2.301 2.301
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.638 0.000 0.000
y 0.000 -24.595 0.000
z 0.000 0.000 -26.742
Traceless
 xyz
x -0.969 0.000 0.000
y 0.000 2.095 0.000
z 0.000 0.000 -1.125
Polar
3z2-r2-2.251
x2-y2-2.043
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.391 0.000 0.000
y 0.000 6.018 0.000
z 0.000 0.000 7.597


<r2> (average value of r2) Å2
<r2> 56.659
(<r2>)1/2 7.527