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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-476.722201
Energy at 298.15K-476.726614
HF Energy-476.722201
Nuclear repulsion energy98.482574
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 B1B95/6-31G
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 3199 3051 4.58      
2 A1 1530 1460 2.18      
3 A1 1175 1120 2.31      
4 A1 1085 1034 4.08      
5 A1 609 581 22.60      
6 A2 3288 3136 0.00      
7 A2 1223 1166 0.00      
8 A2 901 859 0.00      
9 B1 3305 3152 4.65      
10 B1 938 894 5.29      
11 B1 862 822 1.61      
12 B2 3194 3046 5.69      
13 B2 1508 1438 5.57      
14 B2 1115 1063 43.87      
15 B2 627 598 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 12278.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 11710.4 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 B1B95/6-31G
ABC
0.73870 0.32783 0.24969

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.908
C2 0.000 0.738 -0.844
C3 0.000 -0.738 -0.844
H4 -0.914 1.259 -1.101
H5 0.914 1.259 -1.101
H6 0.914 -1.259 -1.101
H7 -0.914 -1.259 -1.101

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.90151.90152.54132.54132.54132.5413
C21.90151.47581.08271.08272.21092.2109
C31.90151.47582.21092.21091.08271.0827
H42.54131.08272.21091.82703.11092.5178
H52.54131.08272.21091.82702.51783.1109
H62.54132.21091.08273.11092.51781.8270
H72.54132.21091.08272.51783.11091.8270

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 67.167 S1 C2 H4 113.935
S1 C2 H5 113.935 S1 C3 C2 67.167
S1 C3 H6 113.935 S1 C3 H7 113.935
C2 S1 C3 45.667 C2 C3 H6 118.767
C2 C3 H7 118.767 C3 C2 H4 118.767
C3 C2 H5 118.767 H4 C2 H5 115.083
H6 C3 H7 115.083
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.107      
2 C -0.482      
3 C -0.482      
4 H 0.214      
5 H 0.214      
6 H 0.214      
7 H 0.214      


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 -2.451 2.451
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.082 0.000 0.000
y 0.000 -24.175 0.000
z 0.000 0.000 -26.504
Traceless
 xyz
x -0.743 0.000 0.000
y 0.000 2.118 0.000
z 0.000 0.000 -1.375
Polar
3z2-r2-2.750
x2-y2-1.907
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.711 0.000 0.000
y 0.000 4.748 0.000
z 0.000 0.000 6.568


<r2> (average value of r2) Å2
<r2> 58.797
(<r2>)1/2 7.668