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All results from a given calculation for CH2SiH2 (silaethylene)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G
 hartrees
Energy at 0K-11.831669
Energy at 298.15K-11.834939
HF Energy-11.831669
Nuclear repulsion energy15.858090
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 B3LYP/CEP-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 3160 3060 6.53      
2 A1 2176 2107 36.55      
3 A1 1420 1375 16.37      
4 A1 961 931 16.06      
5 A1 876 848 29.78      
6 A2 749 726 0.00      
7 B1 843 817 104.29      
8 B1 431 418 4.54      
9 B2 3267 3163 8.74      
10 B2 2208 2138 137.36      
11 B2 899 871 70.67      
12 B2 500 484 12.21      

Unscaled Zero Point Vibrational Energy (zpe) 8744.5 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 8468.1 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 B3LYP/CEP-31G
ABC
3.38591 0.47626 0.41753

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.177
Si2 0.000 0.000 0.562
H3 0.000 0.928 -1.758
H4 0.000 -0.928 -1.758
H5 0.000 1.269 1.358
H6 0.000 -1.269 1.358

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.73901.09481.09482.83542.8354
Si21.73902.49872.49871.49801.4980
H31.09482.49871.85573.13543.8130
H41.09482.49871.85573.81303.1354
H52.83541.49803.13543.81302.5371
H62.83541.49803.81303.13542.5371

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.134 C1 Si2 H6 122.134
Si2 C1 H3 122.058 Si2 C1 H4 122.058
H3 C1 H4 115.885 H5 Si2 H6 115.731
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.531      
2 Si 0.156      
3 H 0.208      
4 H 0.208      
5 H -0.020      
6 H -0.020      


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 0.461 0.461
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.243 0.000 0.000
y 0.000 -19.303 0.000
z 0.000 0.000 -18.936
Traceless
 xyz
x -3.123 0.000 0.000
y 0.000 1.286 0.000
z 0.000 0.000 1.838
Polar
3z2-r23.675
x2-y2-2.940
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.737 0.000 0.000
y 0.000 4.014 0.000
z 0.000 0.000 7.932


<r2> (average value of r2) Å2
<r2> 34.213
(<r2>)1/2 5.849