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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-476.707474
Energy at 298.15K-476.711939
HF Energy-476.707474
Nuclear repulsion energy100.993714
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 B3PW91/6-31G*
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 3155 3019 13.22      
2 A1 1523 1457 5.48      
3 A1 1170 1119 2.83      
4 A1 1060 1014 0.64      
5 A1 662 634 25.42      
6 A2 3235 3095 0.00      
7 A2 1202 1149 0.00      
8 A2 917 877 0.00      
9 B1 3249 3108 6.38      
10 B1 978 935 5.98      
11 B1 846 809 0.78      
12 B2 3154 3017 13.80      
13 B2 1494 1429 0.42      
14 B2 1088 1041 37.80      
15 B2 697 667 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 12213.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11685.1 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 B3PW91/6-31G*
ABC
0.73596 0.35832 0.26675

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.741 -0.797
C3 0.000 -0.741 -0.797
H4 -0.915 1.256 -1.079
H5 0.915 1.256 -1.079
H6 0.915 -1.256 -1.079
H7 -0.915 -1.256 -1.079

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82141.82142.49022.49022.49022.4902
C21.82141.48151.08761.08762.21452.2145
C31.82141.48152.21452.21451.08761.0876
H42.49021.08762.21451.83093.10822.5117
H52.49021.08762.21451.83092.51173.1082
H62.49022.21451.08763.10822.51171.8309
H72.49022.21451.08762.51173.10821.8309

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.003 S1 C2 H4 115.424
S1 C2 H5 115.424 S1 C3 C2 66.003
S1 C3 H6 115.424 S1 C3 H7 115.424
C2 S1 C3 47.994 C2 C3 H6 118.271
C2 C3 H7 118.271 C3 C2 H4 118.271
C3 C2 H5 118.271 H4 C2 H5 114.650
H6 C3 H7 114.650
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.004      
2 C -0.433      
3 C -0.433      
4 H 0.216      
5 H 0.216      
6 H 0.216      
7 H 0.216      


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 -2.130 2.130
CHELPG        
AIM        
ESP 0.021 0.000 -2.180 2.180


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.857 0.000 0.000
y 0.000 -23.982 0.000
z 0.000 0.000 -25.986
Traceless
 xyz
x -0.873 0.000 0.000
y 0.000 1.940 0.000
z 0.000 0.000 -1.066
Polar
3z2-r2-2.133
x2-y2-1.875
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.058 0.000 0.000
y 0.000 4.874 0.000
z 0.000 0.000 6.253


<r2> (average value of r2) Å2
<r2> 56.336
(<r2>)1/2 7.506