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

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-327.324761
Energy at 298.15K-327.323030
HF Energy-327.324761
Nuclear repulsion energy 
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 wB97X-D/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 1012 960 13.55      

Unscaled Zero Point Vibrational Energy (zpe) 505.8 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 479.7 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 wB97X-D/6-31G*
B
0.68464

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.493
C2 0.000 0.000 -1.150

Atom - Atom Distances (Å)
  Si1 C2
Si11.6432
C21.6432

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.211      
2 C -0.211      


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 1.037 1.037
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.191 0.000 0.000
y 0.000 -16.785 0.000
z 0.000 0.000 -19.795
Traceless
 xyz
x -1.900 0.000 0.000
y 0.000 3.208 0.000
z 0.000 0.000 -1.307
Polar
3z2-r2-2.614
x2-y2-3.405
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.351 0.000 0.000
y 0.000 3.424 0.000
z 0.000 0.000 7.553


<r2> (average value of r2) Å2
<r2> 24.134
(<r2>)1/2 4.913

State 2 (1Σ)

Jump to S1C1
Energy calculated at wB97X-D/6-31G*
 hartrees
Energy at 0K-327.275729
Energy at 298.15K-327.274017
HF Energy-327.275729
Nuclear repulsion energy 
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 wB97X-D/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 1144 1085 10.09      

Unscaled Zero Point Vibrational Energy (zpe) 572.0 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 542.5 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 wB97X-D/6-31G*
B
0.74718

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.491
C2 0.000 0.000 -1.146

Atom - Atom Distances (Å)
  Si1 C2
Si11.6376
C21.6376

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.190      
2 C -0.190      


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 1.689 1.689
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.540 0.000 0.000
y 0.000 -19.540 0.000
z 0.000 0.000 -15.320
Traceless
 xyz
x -2.110 0.000 0.000
y 0.000 -2.110 0.000
z 0.000 0.000 4.220
Polar
3z2-r28.440
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 5.351 0.000 0.000
y 0.000 3.424 0.000
z 0.000 0.000 7.553


<r2> (average value of r2) Å2
<r2> 22.609
(<r2>)1/2 4.755