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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-328.867951
Energy at 298.15K-328.871116
HF Energy-328.867951
Nuclear repulsion energy51.273287
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 3080 3030 0.20      
2 A1 2198 2162 23.71      
3 A1 1342 1320 15.30      
4 A1 988 972 10.70      
5 A1 896 882 32.34      
6 A2 714 702 0.00      
7 B1 729 717 72.94      
8 B1 427 420 26.72      
9 B2 3175 3123 0.23      
10 B2 2224 2188 70.98      
11 B2 811 798 76.35      
12 B2 457 450 2.96      

Unscaled Zero Point Vibrational Energy (zpe) 8520.8 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 8381.9 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
3.43574 0.49419 0.43204

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 0.925 -1.736
H4 0.000 -0.925 -1.736
H5 0.000 1.257 1.348
H6 0.000 -1.257 1.348

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6
C11.70211.09341.09342.79832.7983
Si21.70212.46552.46551.48871.4887
H31.09342.46551.84953.10143.7772
H41.09342.46551.84953.77723.1014
H52.79831.48873.10143.77722.5132
H62.79831.48873.77723.10142.5132

picture of silaethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H5 122.422 C1 Si2 H6 122.422
Si2 C1 H3 122.245 Si2 C1 H4 122.245
H3 C1 H4 115.510 H5 Si2 H6 115.155
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 -0.819      
2 Si 0.319      
3 H 0.258      
4 H 0.258      
5 H -0.008      
6 H -0.008      


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 0.507 0.507
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.255 0.000 0.000
y 0.000 -20.363 0.000
z 0.000 0.000 -20.008
Traceless
 xyz
x -3.070 0.000 0.000
y 0.000 1.269 0.000
z 0.000 0.000 1.801
Polar
3z2-r23.602
x2-y2-2.893
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.498 0.000 0.000
y 0.000 5.071 0.000
z 0.000 0.000 8.154


<r2> (average value of r2) Å2
<r2> 39.973
(<r2>)1/2 6.322