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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-475.564864
Energy at 298.15K-475.569445
HF Energy-475.564864
Nuclear repulsion energy101.793581
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/6-31G(2df,p)
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 3292 2981 16.83      
2 A1 1625 1472 5.59      
3 A1 1224 1108 3.40      
4 A1 1141 1033 0.00      
5 A1 670 606 46.69      
6 A2 3372 3053 0.00      
7 A2 1299 1176 0.00      
8 A2 973 881 0.00      
9 B1 3388 3068 5.37      
10 B1 1044 946 3.07      
11 B1 892 807 0.42      
12 B2 3285 2975 16.84      
13 B2 1592 1441 0.07      
14 B2 1199 1086 30.84      
15 B2 744 673 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 12870.0 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 11653.8 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 HF/6-31G(2df,p)
ABC
0.74602 0.36429 0.27078

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.860
C2 0.000 0.737 -0.791
C3 0.000 -0.737 -0.791
H4 -0.906 1.245 -1.067
H5 0.906 1.245 -1.067
H6 0.906 -1.245 -1.067
H7 -0.906 -1.245 -1.067

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80831.80832.46632.46632.46632.4663
C21.80831.47421.07451.07452.19672.1967
C31.80831.47422.19672.19671.07451.0745
H42.46631.07452.19671.81193.07952.4900
H52.46631.07452.19671.81192.49003.0795
H62.46632.19671.07453.07952.49001.8119
H72.46632.19671.07452.49003.07951.8119

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.946 S1 C2 H4 115.257
S1 C2 H5 115.257 S1 C3 C2 65.946
S1 C3 H6 115.257 S1 C3 H7 115.257
C2 S1 C3 48.109 C2 C3 H6 118.211
C2 C3 H7 118.211 C3 C2 H4 118.211
C3 C2 H5 118.211 H4 C2 H5 114.945
H6 C3 H7 114.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.172      
2 C -0.266      
3 C -0.266      
4 H 0.176      
5 H 0.176      
6 H 0.176      
7 H 0.176      


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 -2.236 2.236
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.248 0.000 0.000
y 0.000 -24.327 0.000
z 0.000 0.000 -26.276
Traceless
 xyz
x -0.946 0.000 0.000
y 0.000 1.935 0.000
z 0.000 0.000 -0.988
Polar
3z2-r2-1.977
x2-y2-1.921
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.415 0.000 0.000
y 0.000 5.137 0.000
z 0.000 0.000 6.486


<r2> (average value of r2) Å2
<r2> 55.901
(<r2>)1/2 7.477