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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-476.596685
Energy at 298.15K-476.592338
HF Energy-476.795719
Nuclear repulsion energy100.735113
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(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 12.74      
2 A1 1492 1440 5.35      
3 A1 1147 1107 2.27      
4 A1 1047 1010 0.01      
5 A1 631 609 25.66      
6 A2 3211 3099 0.00      
7 A2 1195 1153 0.00      
8 A2 893 862 0.00      
9 B1 3227 3114 4.59      
10 B1 952 919 3.98      
11 B1 832 803 0.38      
12 B2 3130 3020 13.02      
13 B2 1471 1419 0.13      
14 B2 1074 1037 25.90      
15 B2 669 645 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 12050.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11628.9 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 B3LYP/6-31G(2df,p)
ABC
0.73582 0.35511 0.26487

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/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 1.257 -1.078
H5 0.914 1.257 -1.078
H6 0.914 -1.257 -1.078
H7 -0.914 -1.257 -1.078

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83031.83032.49272.49272.49272.4927
C21.83031.48181.08511.08512.21402.2140
C31.83031.48182.21402.21401.08511.0851
H42.49271.08512.21401.82833.10812.5135
H52.49271.08512.21401.82832.51353.1081
H62.49272.21401.08513.10812.51351.8283
H72.49272.21401.08512.51353.10811.8283

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.019 S1 C2 H4 115.320
S1 C2 H5 115.320 S1 C3 C2 66.019
S1 C3 H6 115.320 S1 C3 H7 115.320
C2 S1 C3 47.962 C2 C3 H6 118.315
C2 C3 H7 118.315 C3 C2 H4 118.315
C3 C2 H5 118.315 H4 C2 H5 114.699
H6 C3 H7 114.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/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


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> 56.591
(<r2>)1/2 7.523