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All results from a given calculation for CH2SiH2 (silaethylene)

using model chemistry: LSDA/6-311G**

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/6-311G**
 hartrees
Energy at 0K-328.874778
Energy at 298.15K-328.877955
HF Energy-328.874778
Nuclear repulsion energy51.286944
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/6-311G**
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 3088 3050 1.08      
2 A1 2201 2174 20.04      
3 A1 1320 1304 14.41      
4 A1 984 972 9.70      
5 A1 896 885 30.43      
6 A2 711 702 0.00      
7 B1 733 724 67.54      
8 B1 439 433 24.50      
9 B2 3185 3146 1.07      
10 B2 2230 2203 65.42      
11 B2 801 791 74.89      
12 B2 453 447 2.71      

Unscaled Zero Point Vibrational Energy (zpe) 8520.1 cm-1
Scaled (by 0.9877) Zero Point Vibrational Energy (zpe) 8415.3 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 LSDA/6-311G**
ABC
3.43340 0.49454 0.43228

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.153
Si2 0.000 0.000 0.549
H3 0.000 0.926 -1.733
H4 0.000 -0.926 -1.733
H5 0.000 1.256 1.347
H6 0.000 -1.256 1.347

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.70221.09241.09242.79802.7980
Si21.70222.46262.46261.48831.4883
H31.09242.46261.85183.09743.7745
H41.09242.46261.85183.77453.0974
H52.79801.48833.09743.77452.5128
H62.79801.48833.77453.09742.5128

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.417 C1 Si2 H6 122.417
Si2 C1 H3 122.048 Si2 C1 H4 122.048
H3 C1 H4 115.904 H5 Si2 H6 115.166
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.625      
2 Si 0.368      
3 H 0.176      
4 H 0.176      
5 H -0.047      
6 H -0.047      


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 0.525 0.525
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.131 0.000 0.000
y 0.000 -20.382 0.000
z 0.000 0.000 -20.087
Traceless
 xyz
x -2.896 0.000 0.000
y 0.000 1.226 0.000
z 0.000 0.000 1.670
Polar
3z2-r23.340
x2-y2-2.749
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.584 0.000 0.000
y 0.000 5.160 0.000
z 0.000 0.000 8.259


<r2> (average value of r2) Å2
<r2> 39.946
(<r2>)1/2 6.320