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

using model chemistry: B1B95/aug-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 B1B95/aug-cc-pVQZ
 hartrees
Energy at 0K-327.410437
Energy at 298.15K-327.408704
HF Energy-327.410437
Nuclear repulsion energy25.981871
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 B1B95/aug-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 992 992 17.49      

Unscaled Zero Point Vibrational Energy (zpe) 496.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 496.2 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 B1B95/aug-cc-pVQZ
B
0.68581

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.513
C2 0.000 0.000 -1.198

Atom - Atom Distances (Å)
  Si1 C2
Si11.7108
C21.7108

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.592      
2 C -0.592      


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 1.699 1.699
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.309 0.000 0.000
y 0.000 -20.545 0.000
z 0.000 0.000 -19.689
Traceless
 xyz
x 2.808 0.000 0.000
y 0.000 -2.046 0.000
z 0.000 0.000 -0.762
Polar
3z2-r2-1.524
x2-y23.236
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.040 0.000 0.000
y 0.000 7.496 0.000
z 0.000 0.000 8.675


<r2> (average value of r2) Å2
<r2> 24.273
(<r2>)1/2 4.927

State 2 (1Σ)

Jump to S1C1
Energy calculated at B1B95/aug-cc-pVQZ
 hartrees
Energy at 0K-327.367275
Energy at 298.15K-327.365559
HF Energy-327.367275
Nuclear repulsion energy27.189145
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 B1B95/aug-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 1105 1105 10.53      

Unscaled Zero Point Vibrational Energy (zpe) 552.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 552.6 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 B1B95/aug-cc-pVQZ
B
0.75103

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.490
C2 0.000 0.000 -1.144

Atom - Atom Distances (Å)
  Si1 C2
Si11.6349
C21.6349

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.640      
2 C -0.640      


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 2.197 2.197
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.953 0.000 0.000
y 0.000 -19.953 0.000
z 0.000 0.000 -15.240
Traceless
 xyz
x -2.357 0.000 0.000
y 0.000 -2.357 0.000
z 0.000 0.000 4.713
Polar
3z2-r29.427
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 13.518 0.000 0.000
y 0.000 13.518 0.000
z 0.000 0.000 8.501


<r2> (average value of r2) Å2
<r2> 22.707
(<r2>)1/2 4.765