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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G**
 hartrees
Energy at 0K-476.532094
Energy at 298.15K-476.536588
HF Energy-476.532094
Nuclear repulsion energy101.267717
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 PBE1PBE/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 3171 3022 11.91      
2 A1 1526 1455 5.16      
3 A1 1181 1125 2.77      
4 A1 1064 1014 0.71      
5 A1 676 645 25.54      
6 A2 3253 3100 0.00      
7 A2 1205 1148 0.00      
8 A2 922 878 0.00      
9 B1 3266 3113 4.64      
10 B1 984 938 5.85      
11 B1 847 807 0.81      
12 B2 3169 3021 11.67      
13 B2 1496 1426 0.57      
14 B2 1093 1042 38.24      
15 B2 714 681 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 12283.2 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 11707.1 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 PBE1PBE/6-31G**
ABC
0.73742 0.36115 0.26851

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.864
C2 0.000 0.740 -0.793
C3 0.000 -0.740 -0.793
H4 -0.915 1.254 -1.075
H5 0.915 1.254 -1.075
H6 0.915 -1.254 -1.075
H7 -0.915 -1.254 -1.075

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81431.81432.48412.48412.48412.4841
C21.81431.47991.08731.08732.21232.2123
C31.81431.47992.21232.21231.08731.0873
H42.48411.08732.21231.83083.10542.5084
H52.48411.08732.21231.83082.50843.1054
H62.48412.21231.08733.10542.50841.8308
H72.48412.21231.08732.50843.10541.8308

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.930 S1 C2 H4 115.475
S1 C2 H5 115.475 S1 C3 C2 65.930
S1 C3 H6 115.475 S1 C3 H7 115.475
C2 S1 C3 48.139 C2 C3 H6 118.225
C2 C3 H7 118.225 C3 C2 H4 118.225
C3 C2 H5 118.225 H4 C2 H5 114.686
H6 C3 H7 114.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.011      
2 C -0.446      
3 C -0.446      
4 H 0.220      
5 H 0.220      
6 H 0.220      
7 H 0.220      


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 -2.126 2.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.903 0.000 0.000
y 0.000 -24.033 0.000
z 0.000 0.000 -26.072
Traceless
 xyz
x -0.851 0.000 0.000
y 0.000 1.954 0.000
z 0.000 0.000 -1.104
Polar
3z2-r2-2.207
x2-y2-1.870
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.047 0.000 0.000
y 0.000 4.857 0.000
z 0.000 0.000 6.207


<r2> (average value of r2) Å2
<r2> 56.144
(<r2>)1/2 7.493