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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G3B3
 hartrees
Energy at 0K-476.564349
Energy at 298.15K-476.559973
HF Energy-476.783492
Nuclear repulsion energy100.430350
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 B3LYP/6-31G*
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 3147 3022 13.20      
2 A1 1527 1466 5.92      
3 A1 1161 1115 3.72      
4 A1 1058 1016 0.18      
5 A1 635 609 26.74      
6 A2 3224 3096 0.00      
7 A2 1207 1159 0.00      
8 A2 911 875 0.00      
9 B1 3238 3110 8.21      
10 B1 970 932 5.49      
11 B1 844 811 0.54      
12 B2 3146 3021 14.74      
13 B2 1500 1441 0.15      
14 B2 1086 1043 36.05      
15 B2 664 638 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 12160.0 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 11677.2 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 B3LYP/6-31G*
ABC
0.73527 0.35179 0.26299

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.876
C2 0.000 0.741 -0.806
C3 0.000 -0.741 -0.806
H4 -0.915 1.258 -1.084
H5 0.915 1.258 -1.084
H6 0.915 -1.258 -1.084
H7 -0.915 -1.258 -1.084

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83771.83772.50232.50232.50232.5023
C21.83771.48181.08711.08712.21582.2158
C31.83771.48182.21582.21581.08711.0871
H42.50231.08712.21581.82963.11092.5160
H52.50231.08712.21581.82962.51603.1109
H62.50232.21581.08713.11092.51601.8296
H72.50232.21581.08712.51603.11091.8296

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.221 S1 C2 H4 115.255
S1 C2 H5 115.255 S1 C3 C2 66.221
S1 C3 H6 115.255 S1 C3 H7 115.255
C2 S1 C3 47.559 C2 C3 H6 118.399
C2 C3 H7 118.399 C3 C2 H4 118.399
C3 C2 H5 118.399 H4 C2 H5 114.573
H6 C3 H7 114.573
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.018      
2 C -0.373      
3 C -0.373      
4 H 0.191      
5 H 0.191      
6 H 0.191      
7 H 0.191      


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 -2.149 2.149
CHELPG 0.000 0.000 -2.179 2.179
AIM        
ESP 0.021 0.000 -2.199 2.199


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 56.905
(<r2>)1/2 7.544