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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVTZ
 hartrees
Energy at 0K-327.196911
Energy at 298.15K-327.195170
HF Energy-327.196911
Nuclear repulsion energy25.636459
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 PBEPBEultrafine/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 954 948 11.98      

Unscaled Zero Point Vibrational Energy (zpe) 477.0 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 473.7 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 PBEPBEultrafine/cc-pVTZ
B
0.66770

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.520
C2 0.000 0.000 -1.214

Atom - Atom Distances (Å)
  Si1 C2
Si11.7339
C21.7339

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.182      
2 C -0.182      


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 1.612 1.612
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.325 0.000 0.000
y 0.000 -20.518 0.000
z 0.000 0.000 -19.740
Traceless
 xyz
x 2.804 0.000 0.000
y 0.000 -1.985 0.000
z 0.000 0.000 -0.819
Polar
3z2-r2-1.637
x2-y23.193
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.280 0.000 0.000
y 0.000 6.383 0.000
z 0.000 0.000 8.369


<r2> (average value of r2) Å2
<r2> 24.615
(<r2>)1/2 4.961

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBEPBEultrafine/cc-pVTZ
 hartrees
Energy at 0K-327.161164
Energy at 298.15K-327.159443
HF Energy-327.161164
Nuclear repulsion energy26.859186
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 PBEPBEultrafine/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 1069 1061 3.84      

Unscaled Zero Point Vibrational Energy (zpe) 534.4 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 530.7 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 PBEPBEultrafine/cc-pVTZ
B
0.73291

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

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
Si11.6550
C21.6550

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.182      
2 C -0.182      


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 2.121 2.121
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.985 0.000 0.000
y 0.000 -19.985 0.000
z 0.000 0.000 -15.355
Traceless
 xyz
x -2.315 0.000 0.000
y 0.000 -2.315 0.000
z 0.000 0.000 4.629
Polar
3z2-r29.259
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 4.280 0.000 0.000
y 0.000 6.383 0.000
z 0.000 0.000 8.369


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