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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B1B95/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-476.836518
Energy at 298.15K-476.841000
HF Energy-476.836518
Nuclear repulsion energy101.824453
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 B1B95/aug-cc-pVTZ
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 3151 3020 16.12      
2 A1 1494 1432 2.39      
3 A1 1164 1115 1.18      
4 A1 1045 1001 0.79      
5 A1 665 638 23.90      
6 A2 3232 3098 0.00      
7 A2 1194 1144 0.00      
8 A2 903 865 0.00      
9 B1 3246 3111 2.92      
10 B1 962 922 3.04      
11 B1 833 798 0.66      
12 B2 3149 3019 11.14      
13 B2 1468 1407 1.05      
14 B2 1078 1033 21.63      
15 B2 714 684 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 12148.0 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 11643.9 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 B1B95/aug-cc-pVTZ
ABC
0.74488 0.36520 0.27148

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.859
C2 0.000 0.737 -0.791
C3 0.000 -0.737 -0.791
H4 -0.911 1.248 -1.064
H5 0.911 1.248 -1.064
H6 0.911 -1.248 -1.064
H7 -0.911 -1.248 -1.064

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.80661.80662.46652.46652.46652.4665
C21.80661.47331.07961.07962.20042.2004
C31.80661.47332.20042.20041.07961.0796
H42.46651.07962.20041.82183.08952.4952
H52.46651.07962.20041.82182.49523.0895
H62.46652.20041.07963.08952.49521.8218
H72.46652.20041.07962.49523.08951.8218

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.936 S1 C2 H4 115.094
S1 C2 H5 115.094 S1 C3 C2 65.936
S1 C3 H6 115.094 S1 C3 H7 115.094
C2 S1 C3 48.128 C2 C3 H6 118.248
C2 C3 H7 118.248 C3 C2 H4 118.248
C3 C2 H5 118.248 H4 C2 H5 115.078
H6 C3 H7 115.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.042      
2 C -0.622      
3 C -0.622      
4 H 0.322      
5 H 0.322      
6 H 0.322      
7 H 0.322      


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 -1.900 1.900
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.099 0.000 0.000
y 0.000 -24.387 0.000
z 0.000 0.000 -26.282
Traceless
 xyz
x -0.765 0.000 0.000
y 0.000 1.804 0.000
z 0.000 0.000 -1.039
Polar
3z2-r2-2.077
x2-y2-1.713
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.720 0.000 0.000
y 0.000 6.242 0.000
z 0.000 0.000 7.669


<r2> (average value of r2) Å2
<r2> 55.841
(<r2>)1/2 7.473