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

using model chemistry: B3LYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-327.413416
Energy at 298.15K-327.411680
HF Energy-327.413416
Nuclear repulsion energy25.848612
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/aug-cc-pVTZ
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 977 945 18.64      

Unscaled Zero Point Vibrational Energy (zpe) 488.3 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 472.4 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/aug-cc-pVTZ
B
0.67879

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.516
C2 0.000 0.000 -1.204

Atom - Atom Distances (Å)
  Si1 C2
Si11.7197
C21.7197

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/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.295      
2 C -0.295      


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 1.756 1.756
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.756 0.000 0.000
y 0.000 -17.458 0.000
z 0.000 0.000 -19.980
Traceless
 xyz
x -2.037 0.000 0.000
y 0.000 2.910 0.000
z 0.000 0.000 -0.873
Polar
3z2-r2-1.745
x2-y2-3.298
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.500 0.000 0.000
y 0.000 5.106 0.000
z 0.000 0.000 8.824


<r2> (average value of r2) Å2
<r2> 24.536
(<r2>)1/2 4.953

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-327.369610
Energy at 298.15K-327.367890
HF Energy-327.369610
Nuclear repulsion energy26.999555
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/aug-cc-pVTZ
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 1076 1041 10.23      

Unscaled Zero Point Vibrational Energy (zpe) 537.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 520.5 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 B3LYP/aug-cc-pVTZ
B
0.74059

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.494
C2 0.000 0.000 -1.152

Atom - Atom Distances (Å)
  Si1 C2
Si11.6464
C21.6464

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/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.293      
2 C -0.293      


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 2.241 2.241
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.189 0.000 0.000
y 0.000 -20.189 0.000
z 0.000 0.000 -15.523
Traceless
 xyz
x -2.333 0.000 0.000
y 0.000 -2.333 0.000
z 0.000 0.000 4.666
Polar
3z2-r29.333
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 50.734 0.000 0.000
y 0.000 50.734 0.000
z 0.000 0.000 8.640


<r2> (average value of r2) Å2
<r2> 23.022
(<r2>)1/2 4.798