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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-474.506569
Energy at 298.15K-474.510994
HF Energy-474.506569
Nuclear repulsion energy100.165336
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 TPSSh/3-21G*
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 3043 10.27      
2 A1 1528 1475 4.88      
3 A1 1117 1078 0.03      
4 A1 1056 1019 4.84      
5 A1 608 587 22.04      
6 A2 3231 3120 0.00      
7 A2 1214 1173 0.00      
8 A2 900 869 0.00      
9 B1 3250 3138 5.60      
10 B1 974 940 5.51      
11 B1 859 830 1.88      
12 B2 3148 3040 11.29      
13 B2 1514 1462 1.68      
14 B2 1112 1074 44.27      
15 B2 663 640 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 12162.2 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 11745.1 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 TPSSh/3-21G*
ABC
0.72295 0.35219 0.26187

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.875
C2 0.000 0.751 -0.805
C3 0.000 -0.751 -0.805
H4 -0.919 1.257 -1.085
H5 0.919 1.257 -1.085
H6 0.919 -1.257 -1.085
H7 -0.919 -1.257 -1.085

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.84021.84022.50292.50292.50292.5029
C21.84021.50241.08561.08562.22622.2262
C31.84021.50242.22622.22621.08561.0856
H42.50291.08562.22621.83793.11432.5141
H52.50291.08562.22621.83792.51413.1143
H62.50292.22621.08563.11432.51411.8379
H72.50292.22621.08562.51413.11431.8379

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.907 S1 C2 H4 115.174
S1 C2 H5 115.174 S1 C3 C2 65.907
S1 C3 H6 115.174 S1 C3 H7 115.174
C2 S1 C3 48.187 C2 C3 H6 117.771
C2 C3 H7 117.771 C3 C2 H4 117.771
C3 C2 H5 117.771 H4 C2 H5 115.663
H6 C3 H7 115.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.079      
2 C -0.546      
3 C -0.546      
4 H 0.253      
5 H 0.253      
6 H 0.253      
7 H 0.253      


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 -2.042 2.042
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 3.720 0.000 0.000
y 0.000 4.696 0.000
z 0.000 0.000 6.059


<r2> (average value of r2) Å2
<r2> 57.193
(<r2>)1/2 7.563