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

using model chemistry: M06-2X/6-311G*

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/6-311G*
 hartrees
Energy at 0K-327.348685
Energy at 298.15K-327.346953
HF Energy-327.348685
Nuclear repulsion energy26.022609
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1000 1000 39.91      

Unscaled Zero Point Vibrational Energy (zpe) 500.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 500.0 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/6-311G*
B
0.68796

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.512
C2 0.000 0.000 -1.196

Atom - Atom Distances (Å)
  Si1 C2
Si11.7082
C21.7082

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/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.367      
2 C -0.367      


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 1.482 1.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.107 0.000 0.000
y 0.000 -20.542 0.000
z 0.000 0.000 -20.020
Traceless
 xyz
x 3.174 0.000 0.000
y 0.000 -1.978 0.000
z 0.000 0.000 -1.196
Polar
3z2-r2-2.393
x2-y23.435
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.406 0.000 0.000
y 0.000 5.667 0.000
z 0.000 0.000 8.236


<r2> (average value of r2) Å2
<r2> 24.261
(<r2>)1/2 4.926

State 2 (1Σ)

Jump to S1C1
Energy calculated at M06-2X/6-311G*
 hartrees
Energy at 0K-327.303526
Energy at 298.15K-327.301809
HF Energy-327.303526
Nuclear repulsion energy27.082427
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1101 1101 14.60      

Unscaled Zero Point Vibrational Energy (zpe) 550.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 550.2 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/6-311G*
B
0.74514

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G*

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 -1.149

Atom - Atom Distances (Å)
  Si1 C2
Si11.6413
C21.6413

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/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.378      
2 C -0.378      


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 2.119 2.119
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.915 0.000 0.000
y 0.000 -19.915 0.000
z 0.000 0.000 -15.590
Traceless
 xyz
x -2.162 0.000 0.000
y 0.000 -2.162 0.000
z 0.000 0.000 4.325
Polar
3z2-r28.650
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 -29.823 0.000 0.000
y 0.000 -29.823 0.000
z 0.000 0.000 7.905


<r2> (average value of r2) Å2
<r2> 22.853
(<r2>)1/2 4.780