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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-476.795718
Energy at 298.15K-476.800143
HF Energy-476.795718
Nuclear repulsion energy100.740784
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 B3LYPultrafine/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 3131 3022 12.72      
2 A1 1491 1439 5.35      
3 A1 1147 1107 2.27      
4 A1 1046 1010 0.01      
5 A1 630 608 25.64      
6 A2 3212 3099 0.00      
7 A2 1195 1153 0.00      
8 A2 894 863 0.00      
9 B1 3227 3114 4.55      
10 B1 952 918 3.97      
11 B1 831 802 0.38      
12 B2 3130 3020 12.99      
13 B2 1471 1419 0.13      
14 B2 1074 1036 25.93      
15 B2 668 645 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 12049.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11627.4 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 B3LYPultrafine/6-31G(2df,p)
ABC
0.73594 0.35515 0.26491

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.871
C2 0.000 0.741 -0.802
C3 0.000 -0.741 -0.802
H4 -0.914 1.256 -1.078
H5 0.914 1.256 -1.078
H6 0.914 -1.256 -1.078
H7 -0.914 -1.256 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83021.83022.49242.49242.49242.4924
C21.83021.48181.08501.08502.21372.2137
C31.83021.48182.21372.21371.08501.0850
H42.49241.08502.21371.82843.10752.5127
H52.49241.08502.21371.82842.51273.1075
H62.49242.21371.08503.10752.51271.8284
H72.49242.21371.08502.51273.10751.8284

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.121 S1 C2 H4 115.108
S1 C2 H5 115.108 S1 C3 C2 66.121
S1 C3 H6 115.108 S1 C3 H7 115.108
C2 S1 C3 47.758 C2 C3 H6 118.364
C2 C3 H7 118.364 C3 C2 H4 118.364
C3 C2 H5 118.364 H4 C2 H5 114.826
H6 C3 H7 114.826
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.190      
2 C -0.196      
3 C -0.196      
4 H 0.145      
5 H 0.145      
6 H 0.145      
7 H 0.145      


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 -2.071 2.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.937 0.000 0.000
y 0.000 -24.189 0.000
z 0.000 0.000 -25.892
Traceless
 xyz
x -0.897 0.000 0.000
y 0.000 1.726 0.000
z 0.000 0.000 -0.829
Polar
3z2-r2-1.658
x2-y2-1.749
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.547 0.000 0.000
y 0.000 5.234 0.000
z 0.000 0.000 6.565


<r2> (average value of r2) Å2
<r2> 56.585
(<r2>)1/2 7.522