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

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-327.219147
Energy at 298.15K-327.217414
HF Energy-327.219147
Nuclear repulsion energy25.910308
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-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 992 953 17.44      

Unscaled Zero Point Vibrational Energy (zpe) 495.9 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 476.5 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 PBE1PBE/cc-pVTZ
B
0.68204

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.515
C2 0.000 0.000 -1.201

Atom - Atom Distances (Å)
  Si1 C2
Si11.7156
C21.7156

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-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.187      
2 C -0.187      


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 1.518 1.518
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.204 0.000 0.000
y 0.000 -20.507 0.000
z 0.000 0.000 -19.689
Traceless
 xyz
x 2.894 0.000 0.000
y 0.000 -2.061 0.000
z 0.000 0.000 -0.833
Polar
3z2-r2-1.666
x2-y23.303
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.265 0.000 0.000
y 0.000 6.492 0.000
z 0.000 0.000 8.249


<r2> (average value of r2) Å2
<r2> 24.312
(<r2>)1/2 4.931

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-327.170747
Energy at 298.15K-327.169031
HF Energy-327.170747
Nuclear repulsion energy27.081002
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-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 1103 1060 9.49      

Unscaled Zero Point Vibrational Energy (zpe) 551.2 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 529.7 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-pVTZ
B
0.74506

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

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
Si11.6414
C21.6414

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-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.195      
2 C -0.195      


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 2.134 2.134
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.954 0.000 0.000
y 0.000 -19.954 0.000
z 0.000 0.000 -15.213
Traceless
 xyz
x -2.371 0.000 0.000
y 0.000 -2.371 0.000
z 0.000 0.000 4.741
Polar
3z2-r29.482
x2-y20.000
xy0.000
xz0.000
yz0.000


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