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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3LYPultrafine/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-476.793042
Energy at 298.15K-476.797467
HF Energy-476.793042
Nuclear repulsion energy100.436893
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/6-31+G**
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 3135 3018 13.43      
2 A1 1508 1451 5.11      
3 A1 1147 1104 4.05      
4 A1 1051 1012 0.79      
5 A1 627 604 28.08      
6 A2 3216 3096 0.00      
7 A2 1196 1151 0.00      
8 A2 903 869 0.00      
9 B1 3229 3109 5.39      
10 B1 958 922 4.39      
11 B1 839 807 0.97      
12 B2 3134 3017 12.15      
13 B2 1481 1425 0.55      
14 B2 1080 1039 40.38      
15 B2 661 636 0.95      

Unscaled Zero Point Vibrational Energy (zpe) 12081.6 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 11630.9 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 B3LYPultrafine/6-31+G**
ABC
0.73451 0.35203 0.26306

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.875
C2 0.000 0.742 -0.806
C3 0.000 -0.742 -0.806
H4 -0.915 1.258 -1.083
H5 0.915 1.258 -1.083
H6 0.915 -1.258 -1.083
H7 -0.915 -1.258 -1.083

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83761.83762.50062.50062.50062.5006
C21.83761.48311.08661.08662.21612.2161
C31.83761.48312.21612.21611.08661.0866
H42.50061.08662.21611.83073.11102.5154
H52.50061.08662.21611.83072.51543.1110
H62.50062.21611.08663.11102.51541.8307
H72.50062.21611.08662.51543.11101.8307

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.201 S1 C2 H4 115.119
S1 C2 H5 115.119 S1 C3 C2 66.201
S1 C3 H6 115.119 S1 C3 H7 115.119
C2 S1 C3 47.597 C2 C3 H6 118.361
C2 C3 H7 118.361 C3 C2 H4 118.361
C3 C2 H5 118.361 H4 C2 H5 114.785
H6 C3 H7 114.785
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.048      
2 C -0.341      
3 C -0.341      
4 H 0.182      
5 H 0.182      
6 H 0.182      
7 H 0.182      


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 -2.158 2.158
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.592 0.000 0.000
y 0.000 -24.609 0.000
z 0.000 0.000 -26.748
Traceless
 xyz
x -0.913 0.000 0.000
y 0.000 2.061 0.000
z 0.000 0.000 -1.148
Polar
3z2-r2-2.295
x2-y2-1.982
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.085 0.000 0.000
y 0.000 5.515 0.000
z 0.000 0.000 7.108


<r2> (average value of r2) Å2
<r2> 57.249
(<r2>)1/2 7.566