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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-476.521052
Energy at 298.15K-476.525520
HF Energy-476.393619
Nuclear repulsion energy100.772284
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3182 3021 11.72      
2 A1 1548 1469 5.98      
3 A1 1174 1115 3.54      
4 A1 1078 1023 0.31      
5 A1 649 616 25.45      
6 A2 3263 3097 0.00      
7 A2 1223 1161 0.00      
8 A2 930 883 0.00      
9 B1 3276 3110 6.49      
10 B1 988 938 5.48      
11 B1 856 813 0.43      
12 B2 3180 3019 12.29      
13 B2 1520 1443 0.12      
14 B2 1106 1049 37.22      
15 B2 682 647 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 12327.5 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 11701.2 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 B2PLYP/6-31G*
ABC
0.73717 0.35518 0.26505

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.869
C2 0.000 0.741 -0.798
C3 0.000 -0.741 -0.798
H4 -0.914 1.253 -1.083
H5 0.914 1.253 -1.083
H6 0.914 -1.253 -1.083
H7 -0.914 -1.253 -1.083

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82431.82432.49302.49302.49302.4930
C21.82431.48151.08551.08552.21132.2113
C31.82431.48152.21132.21131.08551.0855
H42.49301.08552.21131.82763.10112.5053
H52.49301.08552.21131.82762.50533.1011
H62.49302.21131.08553.10112.50531.8276
H72.49302.21131.08552.50533.10111.8276

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.043 S1 C2 H4 115.555
S1 C2 H5 115.555 S1 C3 C2 66.043
S1 C3 H6 115.555 S1 C3 H7 115.555
C2 S1 C3 47.914 C2 C3 H6 118.137
C2 C3 H7 118.137 C3 C2 H4 118.137
C3 C2 H5 118.137 H4 C2 H5 114.671
H6 C3 H7 114.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S -0.011      
2 C -0.390      
3 C -0.390      
4 H 0.198      
5 H 0.198      
6 H 0.198      
7 H 0.198      


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 -2.135 2.135
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.176 0.000 0.000
y 0.000 -24.291 0.000
z 0.000 0.000 -26.188
Traceless
 xyz
x -0.936 0.000 0.000
y 0.000 1.891 0.000
z 0.000 0.000 -0.955
Polar
3z2-r2-1.909
x2-y2-1.885
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.019 0.000 0.000
y 0.000 4.825 0.000
z 0.000 0.000 6.228


<r2> (average value of r2) Å2
<r2> 56.705
(<r2>)1/2 7.530