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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: LSDA/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 LSDA/6-31G**
 hartrees
Energy at 0K-475.291662
Energy at 298.15K-475.296074
HF Energy-475.291662
Nuclear repulsion energy101.245668
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 LSDA/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 3073 3016 8.99      
2 A1 1445 1418 3.76      
3 A1 1158 1137 2.18      
4 A1 1004 985 1.64      
5 A1 669 657 18.83      
6 A2 3160 3101 0.00      
7 A2 1143 1122 0.00      
8 A2 869 853 0.00      
9 B1 3173 3113 1.62      
10 B1 932 914 7.02      
11 B1 812 796 1.08      
12 B2 3074 3016 7.22      
13 B2 1414 1388 1.93      
14 B2 1024 1005 38.15      
15 B2 696 683 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 11822.9 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 11601.8 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 LSDA/6-31G**
ABC
0.73782 0.36103 0.26902

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.863
C2 0.000 0.738 -0.792
C3 0.000 -0.738 -0.792
H4 -0.924 1.254 -1.076
H5 0.924 1.254 -1.076
H6 0.924 -1.254 -1.076
H7 -0.924 -1.254 -1.076

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.81251.81252.48742.48742.48742.4874
C21.81251.47571.09561.09562.21422.2142
C31.81251.47572.21422.21421.09561.0956
H42.48741.09562.21421.84703.11542.5088
H52.48741.09562.21421.84702.50883.1154
H62.48742.21421.09563.11542.50881.8470
H72.48742.21421.09562.50883.11541.8470

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 65.977 S1 C2 H4 115.374
S1 C2 H5 115.374 S1 C3 C2 65.977
S1 C3 H6 115.374 S1 C3 H7 115.374
C2 S1 C3 48.046 C2 C3 H6 118.132
C2 C3 H7 118.132 C3 C2 H4 118.132
C3 C2 H5 118.132 H4 C2 H5 114.910
H6 C3 H7 114.910
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.005      
2 C -0.370      
3 C -0.370      
4 H 0.184      
5 H 0.184      
6 H 0.184      
7 H 0.184      


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 -2.060 2.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.833 0.000 0.000
y 0.000 -24.063 0.000
z 0.000 0.000 -26.085
Traceless
 xyz
x -0.760 0.000 0.000
y 0.000 1.896 0.000
z 0.000 0.000 -1.137
Polar
3z2-r2-2.274
x2-y2-1.771
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.186 0.000 0.000
y 0.000 4.955 0.000
z 0.000 0.000 6.267


<r2> (average value of r2) Å2
<r2> 56.143
(<r2>)1/2 7.493