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All results from a given calculation for SiC (silicon monocarbide)

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 C*V 3Σ
2 1 yes C*V 1Σ

State 1 (3Σ)

Jump to S2C1
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-9.305142
Energy at 298.15K-9.303398
HF Energy-9.305142
Nuclear repulsion energy4.861879
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 Σ 946 913 16.79      

Unscaled Zero Point Vibrational Energy (zpe) 472.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 456.6 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*
B
0.66190

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.522
C2 0.000 0.000 -1.219

Atom - Atom Distances (Å)
  Si1 C2
Si11.7415
C21.7415

picture of silicon monocarbide state 1 conformation 1
More geometry information
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 Si 0.109      
2 C -0.109      


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 1.553 1.553
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.479 0.000 0.000
y 0.000 -15.970 0.000
z 0.000 0.000 -18.915
Traceless
 xyz
x -2.036 0.000 0.000
y 0.000 3.227 0.000
z 0.000 0.000 -1.191
Polar
3z2-r2-2.382
x2-y2-3.509
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.946 0.000 0.000
y 0.000 3.513 0.000
z 0.000 0.000 8.117


<r2> (average value of r2) Å2
<r2> 18.354
(<r2>)1/2 4.284

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-9.258617
Energy at 298.15K-9.256892
HF Energy-9.258617
Nuclear repulsion energy5.077601
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 Σ 1052 1016 9.36      

Unscaled Zero Point Vibrational Energy (zpe) 525.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 507.8 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*
B
0.72194

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.500
C2 0.000 0.000 -1.167

Atom - Atom Distances (Å)
  Si1 C2
Si11.6675
C21.6675

picture of silicon monocarbide state 2 conformation 1
More geometry information
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 Si 0.100      
2 C -0.100      


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 2.077 2.077
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.839 0.000 0.000
y 0.000 -18.839 0.000
z 0.000 0.000 -14.187
Traceless
 xyz
x -2.326 0.000 0.000
y 0.000 -2.326 0.000
z 0.000 0.000 4.652
Polar
3z2-r29.303
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x -88.674 0.000 0.000
y 0.000 -88.674 0.000
z 0.000 0.000 8.125


<r2> (average value of r2) Å2
<r2> 17.249
(<r2>)1/2 4.153