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All results from a given calculation for SiC2 (Silicon dicarbide)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-365.533945
Energy at 298.15K 
HF Energy-365.533945
Nuclear repulsion energy62.587458
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/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 1768 1763 16.92 26.79 0.09 0.17
2 A1 762 760 125.97 36.66 0.32 0.49
3 B2 150 150 77.84 11.15 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1339.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 1336.3 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 BLYP/6-311G*
ABC
1.73222 0.42390 0.34056

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.810
C2 0.000 0.637 -0.945
C3 0.000 -0.637 -0.945

Atom - Atom Distances (Å)
  Si1 C2 C3
Si11.86651.8665
C21.86651.2736
C31.86651.2736

picture of Silicon dicarbide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C2 Si1 C3 39.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.443      
2 C -0.222      
3 C -0.222      


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 2.355 2.355
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.760 0.000 0.000
y 0.000 -26.211 0.000
z 0.000 0.000 -25.518
Traceless
 xyz
x 3.105 0.000 0.000
y 0.000 -2.072 0.000
z 0.000 0.000 -1.032
Polar
3z2-r2-2.064
x2-y23.451
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.173 0.000 0.000
y 0.000 6.093 0.000
z 0.000 0.000 7.338


<r2> (average value of r2) Å2
<r2> 40.266
(<r2>)1/2 6.346