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

using model chemistry: PBE1PBE/cc-pVDZ

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 PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-327.200957
Energy at 298.15K-327.199220
HF Energy-327.200957
Nuclear repulsion energy25.705578
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 PBE1PBE/cc-pVDZ
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 973 935 15.52      

Unscaled Zero Point Vibrational Energy (zpe) 486.4 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 467.7 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 PBE1PBE/cc-pVDZ
B
0.67130

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.519
C2 0.000 0.000 -1.210

Atom - Atom Distances (Å)
  Si1 C2
Si11.7292
C21.7292

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.219      
2 C -0.219      


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 1.414 1.414
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.478 0.000 0.000
y 0.000 -17.119 0.000
z 0.000 0.000 -19.521
Traceless
 xyz
x -2.158 0.000 0.000
y 0.000 2.881 0.000
z 0.000 0.000 -0.722
Polar
3z2-r2-1.445
x2-y2-3.359
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.564 0.000 0.000
y 0.000 3.589 0.000
z 0.000 0.000 7.793


<r2> (average value of r2) Å2
<r2> 24.450
(<r2>)1/2 4.945

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-327.152211
Energy at 298.15K-327.150493
HF Energy-327.152211
Nuclear repulsion energy26.876814
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 PBE1PBE/cc-pVDZ
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 1088 1046 8.10      

Unscaled Zero Point Vibrational Energy (zpe) 544.1 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 523.2 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 PBE1PBE/cc-pVDZ
B
0.73387

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.496
C2 0.000 0.000 -1.158

Atom - Atom Distances (Å)
  Si1 C2
Si11.6539
C21.6539

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.220      
2 C -0.220      


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 2.059 2.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.933 0.000 0.000
y 0.000 -19.933 0.000
z 0.000 0.000 -14.991
Traceless
 xyz
x -2.471 0.000 0.000
y 0.000 -2.471 0.000
z 0.000 0.000 4.942
Polar
3z2-r29.884
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 19.572 0.000 0.000
y 0.000 19.572 0.000
z 0.000 0.000 7.694


<r2> (average value of r2) Å2
<r2> 22.909
(<r2>)1/2 4.786