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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-476.534803
Energy at 298.15K-476.539273
HF Energy-476.399796
Nuclear repulsion energy100.855242
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
4/u)
Dep P Dep U
1 A1 3182 3182 11.59      
2 A1 1539 1539 5.85      
3 A1 1171 1171 3.59      
4 A1 1074 1074 0.23      
5 A1 649 649 25.05      
6 A2 3267 3267 0.00      
7 A2 1218 1218 0.00      
8 A2 925 925 0.00      
9 B1 3280 3280 6.37      
10 B1 983 983 4.98      
11 B1 852 852 0.40      
12 B2 3180 3180 12.22      
13 B2 1511 1511 0.10      
14 B2 1101 1101 35.22      
15 B2 682 682 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 12306.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12306.3 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
0.73836 0.35572 0.26546

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 0.871
C2 0.000 0.740 -0.801
C3 0.000 -0.740 -0.801
H4 -0.913 1.252 -1.080
H5 0.913 1.252 -1.080
H6 0.913 -1.252 -1.080
H7 -0.913 -1.252 -1.080

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.82811.82812.49152.49152.49152.4915
C21.82811.48061.08321.08322.20932.2093
C31.82811.48062.20932.20931.08321.0832
H42.49151.08322.20931.82573.09902.5041
H52.49151.08322.20931.82572.50413.0990
H62.49152.20931.08323.09902.50411.8257
H72.49152.20931.08322.50413.09901.8257

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.112 S1 C2 H4 115.299
S1 C2 H5 115.299 S1 C3 C2 66.112
S1 C3 H6 115.299 S1 C3 H7 115.299
C2 S1 C3 47.776 C2 C3 H6 118.194
C2 C3 H7 118.194 C3 C2 H4 118.194
C3 C2 H5 118.194 H4 C2 H5 114.853
H6 C3 H7 114.853
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 -0.010      
2 C -0.302      
3 C -0.302      
4 H 0.153      
5 H 0.153      
6 H 0.153      
7 H 0.153      


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 -2.108 2.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.181 0.000 0.000
y 0.000 -24.296 0.000
z 0.000 0.000 -26.185
Traceless
 xyz
x -0.940 0.000 0.000
y 0.000 1.887 0.000
z 0.000 0.000 -0.947
Polar
3z2-r2-1.893
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 4.048 0.000 0.000
y 0.000 4.860 0.000
z 0.000 0.000 6.266


<r2> (average value of r2) Å2
<r2> 56.635
(<r2>)1/2 7.526