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All results from a given calculation for CH2SiH2 (silaethylene)

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-328.830553
Energy at 298.15K-328.833690
HF Energy-328.830553
Nuclear repulsion energy51.163738
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 3114 3055 0.88      
2 A1 2214 2173 29.34      
3 A1 1349 1323 9.79      
4 A1 980 962 8.69      
5 A1 893 877 30.63      
6 A2 716 703 0.00      
7 B1 739 725 57.60      
8 B1 417 409 17.04      
9 B2 3208 3148 0.40      
10 B2 2244 2202 96.04      
11 B2 806 791 72.77      
12 B2 450 441 1.61      

Unscaled Zero Point Vibrational Energy (zpe) 8565.4 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 8405.2 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 LSDA/6-31G*
ABC
3.42342 0.49190 0.43010

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)
C1 0.000 0.000 -1.156
Si2 0.000 0.000 0.551
H3 0.000 0.927 -1.738
H4 0.000 -0.927 -1.738
H5 0.000 1.259 1.351
H6 0.000 -1.259 1.351

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.70641.09471.09472.80492.8049
Si21.70642.46962.46961.49151.4915
H31.09472.46961.85343.10713.7842
H41.09472.46961.85343.78423.1071
H52.80491.49153.10713.78422.5173
H62.80491.49153.78423.10712.5173

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.446 C1 Si2 H6 122.446
Si2 C1 H3 122.162 Si2 C1 H4 122.162
H3 C1 H4 115.676 H5 Si2 H6 115.107
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 C -0.519      
2 Si 0.130      
3 H 0.196      
4 H 0.196      
5 H -0.001      
6 H -0.001      


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 0.246 0.246
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.861 0.000 0.000
y 0.000 -19.982 0.000
z 0.000 0.000 -19.401
Traceless
 xyz
x -3.169 0.000 0.000
y 0.000 1.149 0.000
z 0.000 0.000 2.020
Polar
3z2-r24.040
x2-y2-2.879
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.798 0.000 0.000
y 0.000 4.576 0.000
z 0.000 0.000 7.514


<r2> (average value of r2) Å2
<r2> 39.799
(<r2>)1/2 6.309