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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-87.882757
Energy at 298.15K-87.887224
HF Energy-87.882757
Nuclear repulsion energy56.897214
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/LANL2DZ
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 3367 3030 11.74      
2 A1 1645 1480 0.26      
3 A1 1235 1111 3.74      
4 A1 1168 1051 5.06      
5 A1 568 511 38.29      
6 A2 3467 3120 0.00      
7 A2 1325 1192 0.00      
8 A2 989 890 0.00      
9 B1 3480 3131 10.11      
10 B1 1013 912 4.45      
11 B1 917 825 2.25      
12 B2 3358 3022 13.46      
13 B2 1615 1454 7.11      
14 B2 1220 1098 74.25      
15 B2 622 559 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 12993.9 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 11693.2 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 HF/LANL2DZ
ABC
0.74362 0.32647 0.24888

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 1.325
C2 0.000 0.737 -0.435
C3 0.000 -0.737 -0.435
H4 -0.903 1.255 -0.683
H5 0.903 1.255 -0.683
H6 0.903 -1.255 -0.683
H7 -0.903 -1.255 -0.683

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.90761.90762.53412.53412.53412.5341
C21.90761.47371.07031.07032.20132.2013
C31.90761.47372.20132.20131.07031.0703
H42.53411.07032.20131.80563.09252.5107
H52.53411.07032.20131.80562.51073.0925
H62.53412.20131.07033.09252.51071.8056
H72.53412.20131.07032.51073.09251.8056

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.277 S1 C2 H4 113.639
S1 C2 H5 113.639 S1 C3 C2 67.277
S1 C3 H6 113.639 S1 C3 H7 113.639
C2 S1 C3 45.445 C2 C3 H6 118.976
C2 C3 H7 118.976 C3 C2 H4 118.976
C3 C2 H5 118.976 H4 C2 H5 115.032
H6 C3 H7 115.032
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.012      
2 C -0.479      
3 C -0.479      
4 H 0.242      
5 H 0.242      
6 H 0.242      
7 H 0.242      


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 -2.987 2.987
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.774 0.000 0.000
y 0.000 -24.105 0.000
z 0.000 0.000 -29.292
Traceless
 xyz
x 0.924 0.000 0.000
y 0.000 3.428 0.000
z 0.000 0.000 -4.352
Polar
3z2-r2-8.704
x2-y2-1.669
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.014 0.000 0.000
y 0.000 5.047 0.000
z 0.000 0.000 7.094


<r2> (average value of r2) Å2
<r2> 47.226
(<r2>)1/2 6.872