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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: PBE1PBE/3-21G*

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/3-21G*
 hartrees
Energy at 0K-474.246108
Energy at 298.15K-474.250579
HF Energy-474.246108
Nuclear repulsion energy100.787788
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/3-21G*
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 3176 3048 7.15      
2 A1 1528 1466 3.10      
3 A1 1135 1089 0.01      
4 A1 1073 1030 6.93      
5 A1 637 611 21.33      
6 A2 3258 3127 0.00      
7 A2 1216 1167 0.00      
8 A2 908 872 0.00      
9 B1 3276 3144 2.03      
10 B1 986 946 5.81      
11 B1 871 836 2.43      
12 B2 3172 3045 6.51      
13 B2 1512 1451 4.14      
14 B2 1129 1084 46.97      
15 B2 694 666 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 12284.5 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 11790.7 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/3-21G*
ABC
0.72806 0.35811 0.26573

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.867
C2 0.000 0.748 -0.796
C3 0.000 -0.748 -0.796
H4 -0.918 1.253 -1.081
H5 0.918 1.253 -1.081
H6 0.918 -1.253 -1.081
H7 -0.918 -1.253 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82411.82412.49172.49172.49172.4917
C21.82411.49641.08531.08532.21952.2195
C31.82411.49642.21952.21951.08531.0853
H42.49171.08532.21951.83543.10542.5050
H52.49171.08532.21951.83542.50503.1054
H62.49172.21951.08533.10542.50501.8354
H72.49172.21951.08532.50503.10541.8354

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.784 S1 C2 H4 115.488
S1 C2 H5 115.488 S1 C3 C2 65.784
S1 C3 H6 115.488 S1 C3 H7 115.488
C2 S1 C3 48.432 C2 C3 H6 117.690
C2 C3 H7 117.690 C3 C2 H4 117.690
C3 C2 H5 117.690 H4 C2 H5 115.465
H6 C3 H7 115.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.097      
2 C -0.577      
3 C -0.577      
4 H 0.264      
5 H 0.264      
6 H 0.264      
7 H 0.264      


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 -2.002 2.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.097 0.000 0.000
y 0.000 -24.299 0.000
z 0.000 0.000 -26.398
Traceless
 xyz
x -0.749 0.000 0.000
y 0.000 1.948 0.000
z 0.000 0.000 -1.200
Polar
3z2-r2-2.399
x2-y2-1.798
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.694 0.000 0.000
y 0.000 4.636 0.000
z 0.000 0.000 5.950


<r2> (average value of r2) Å2
<r2> 56.672
(<r2>)1/2 7.528