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

using model chemistry: B3LYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-327.419045
Energy at 298.15K-327.417310
HF Energy-327.419045
Nuclear repulsion energy25.937454
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/cc-pVQZ
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 984 953 17.45      

Unscaled Zero Point Vibrational Energy (zpe) 491.9 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 476.6 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/cc-pVQZ
B
0.68347

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.514
C2 0.000 0.000 -1.200

Atom - Atom Distances (Å)
  Si1 C2
Si11.7138
C21.7138

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/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.282      
2 C -0.282      


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 1.726 1.726
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.352 0.000 0.000
y 0.000 -20.628 0.000
z 0.000 0.000 -19.902
Traceless
 xyz
x 2.913 0.000 0.000
y 0.000 -2.001 0.000
z 0.000 0.000 -0.913
Polar
3z2-r2-1.825
x2-y23.276
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.642 0.000 0.000
y 0.000 7.612 0.000
z 0.000 0.000 8.498


<r2> (average value of r2) Å2
<r2> 24.386
(<r2>)1/2 4.938

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-327.375518
Energy at 298.15K-327.373799
HF Energy-327.375518
Nuclear repulsion energy27.094381
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/cc-pVQZ
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 1083 1049 9.07      

Unscaled Zero Point Vibrational Energy (zpe) 541.5 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 524.6 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/cc-pVQZ
B
0.74580

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.492
C2 0.000 0.000 -1.148

Atom - Atom Distances (Å)
  Si1 C2
Si11.6406
C21.6406

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/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.301      
2 C -0.301      


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 2.205 2.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.068 0.000 0.000
y 0.000 -20.068 0.000
z 0.000 0.000 -15.479
Traceless
 xyz
x -2.294 0.000 0.000
y 0.000 -2.294 0.000
z 0.000 0.000 4.588
Polar
3z2-r29.177
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 36.754 0.000 0.000
y 0.000 36.754 0.000
z 0.000 0.000 8.344


<r2> (average value of r2) Å2
<r2> 22.883
(<r2>)1/2 4.784