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

using model chemistry: M06-2X/6-31G

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 M06-2X/6-31G
 hartrees
Energy at 0K-327.284776
Energy at 298.15K-327.283020
HF Energy-327.284776
Nuclear repulsion energy25.243085
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 M06-2X/6-31G
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 893 893 25.77      

Unscaled Zero Point Vibrational Energy (zpe) 446.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 446.3 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 M06-2X/6-31G
B
0.64736

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.528
C2 0.000 0.000 -1.233

Atom - Atom Distances (Å)
  Si1 C2
Si11.7609
C21.7609

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.329      
2 C -0.329      


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 1.066 1.066
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.065 0.000 0.000
y 0.000 -20.641 0.000
z 0.000 0.000 -20.561
Traceless
 xyz
x 3.536 0.000 0.000
y 0.000 -1.828 0.000
z 0.000 0.000 -1.708
Polar
3z2-r2-3.415
x2-y23.576
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.370 0.000 0.000
y 0.000 5.390 0.000
z 0.000 0.000 7.801


<r2> (average value of r2) Å2
<r2> 25.154
(<r2>)1/2 5.015

State 2 (1Σ)

Jump to S1C1
Energy calculated at M06-2X/6-31G
 hartrees
Energy at 0K-327.238898
Energy at 298.15K-327.237170
HF Energy-327.238898
Nuclear repulsion energy26.434171
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 M06-2X/6-31G
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 1025 1025 8.00      

Unscaled Zero Point Vibrational Energy (zpe) 512.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 512.6 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 M06-2X/6-31G
B
0.70990

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.504
C2 0.000 0.000 -1.177

Atom - Atom Distances (Å)
  Si1 C2
Si11.6816
C21.6816

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.314      
2 C -0.314      


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 1.749 1.749
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.881 0.000 0.000
y 0.000 -19.881 0.000
z 0.000 0.000 -16.098
Traceless
 xyz
x -1.891 0.000 0.000
y 0.000 -1.891 0.000
z 0.000 0.000 3.783
Polar
3z2-r27.565
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 52.531 0.000 0.000
y 0.000 52.531 0.000
z 0.000 0.000 7.741


<r2> (average value of r2) Å2
<r2> 23.506
(<r2>)1/2 4.848