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All results from a given calculation for CH2SiH2 (silaethylene)

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-328.148104
Energy at 298.15K-328.151265
HF Energy-328.148104
Nuclear repulsion energy50.378692
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 BLYP/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 3086 3069 0.62      
2 A1 2170 2158 31.65      
3 A1 1418 1410 4.35      
4 A1 946 941 13.30      
5 A1 879 874 39.31      
6 A2 729 725 0.00      
7 B1 791 787 58.30      
8 B1 371 369 11.85      
9 B2 3176 3158 1.31      
10 B2 2201 2189 109.54      
11 B2 854 850 67.83      
12 B2 473 471 9.21      

Unscaled Zero Point Vibrational Energy (zpe) 8547.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 8500.1 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 BLYP/3-21G
ABC
3.39517 0.47153 0.41403

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
Si2 0.000 0.000 0.565
H3 0.000 0.926 -1.764
H4 0.000 -0.926 -1.764
H5 0.000 1.267 1.361
H6 0.000 -1.267 1.361

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.74921.09251.09252.84352.8435
Si21.74922.50612.50611.49661.4966
H31.09252.50611.85233.14363.8179
H41.09252.50611.85233.81793.1436
H52.84351.49663.14363.81792.5342
H62.84351.49663.81793.14362.5342

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.149 C1 Si2 H6 122.149
Si2 C1 H3 122.033 Si2 C1 H4 122.033
H3 C1 H4 115.933 H5 Si2 H6 115.702
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.733      
2 Si 0.509      
3 H 0.196      
4 H 0.196      
5 H -0.085      
6 H -0.085      


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 0.123 0.123
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.969 0.000 0.000
y 0.000 -20.815 0.000
z 0.000 0.000 -20.252
Traceless
 xyz
x -2.436 0.000 0.000
y 0.000 0.796 0.000
z 0.000 0.000 1.640
Polar
3z2-r23.280
x2-y2-2.154
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.094 0.000 0.000
y 0.000 4.336 0.000
z 0.000 0.000 7.407


<r2> (average value of r2) Å2
<r2> 41.070
(<r2>)1/2 6.409