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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-476.779869
Energy at 298.15K-476.784343
HF Energy-476.779869
Nuclear repulsion energy101.433820
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 B1B95/6-31+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 3154 3018 13.31      
2 A1 1503 1438 4.69      
3 A1 1166 1115 3.20      
4 A1 1051 1006 1.04      
5 A1 669 640 26.02      
6 A2 3240 3099 0.00      
7 A2 1186 1135 0.00      
8 A2 908 868 0.00      
9 B1 3252 3111 4.28      
10 B1 967 925 4.25      
11 B1 837 800 1.08      
12 B2 3153 3016 11.28      
13 B2 1472 1408 0.81      
14 B2 1080 1033 40.32      
15 B2 711 680 1.17      

Unscaled Zero Point Vibrational Energy (zpe) 12173.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 11645.5 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 B1B95/6-31+G**
ABC
0.73845 0.36273 0.26946

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.862
C2 0.000 0.740 -0.791
C3 0.000 -0.740 -0.791
H4 -0.914 1.252 -1.072
H5 0.914 1.252 -1.072
H6 0.914 -1.252 -1.072
H7 -0.914 -1.252 -1.072

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81101.81102.47872.47872.47872.4787
C21.81101.47971.08511.08512.20972.2097
C31.81101.47972.20972.20971.08511.0851
H42.47871.08512.20971.82903.10092.5041
H52.47871.08512.20971.82902.50413.1009
H62.47872.20971.08513.10092.50411.8290
H72.47872.20971.08512.50413.10091.8290

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.887 S1 C2 H4 115.412
S1 C2 H5 115.412 S1 C3 C2 65.887
S1 C3 H6 115.412 S1 C3 H7 115.412
C2 S1 C3 48.226 C2 C3 H6 118.164
C2 C3 H7 118.164 C3 C2 H4 118.164
C3 C2 H5 118.164 H4 C2 H5 114.860
H6 C3 H7 114.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.039      
2 C -0.372      
3 C -0.372      
4 H 0.196      
5 H 0.196      
6 H 0.196      
7 H 0.196      


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 -2.079 2.079
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.238 0.000 0.000
y 0.000 -24.344 0.000
z 0.000 0.000 -26.503
Traceless
 xyz
x -0.815 0.000 0.000
y 0.000 2.026 0.000
z 0.000 0.000 -1.211
Polar
3z2-r2-2.422
x2-y2-1.894
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.975 0.000 0.000
y 0.000 5.423 0.000
z 0.000 0.000 6.854


<r2> (average value of r2) Å2
<r2> 56.226
(<r2>)1/2 7.498