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

using model chemistry: HF/6-311G**

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 HF/6-311G**
 hartrees
Energy at 0K-326.633125
Energy at 298.15K-326.631352
HF Energy-326.633125
Nuclear repulsion energy25.219327
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 HF/6-311G**
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 829 753 32.80      

Unscaled Zero Point Vibrational Energy (zpe) 414.2 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 376.3 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 HF/6-311G**
B
0.64615

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.529
C2 0.000 0.000 -1.234

Atom - Atom Distances (Å)
  Si1 C2
Si11.7626
C21.7626

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.397      
2 C -0.397      


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 0.574 0.574
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.945 0.000 0.000
y 0.000 -21.250 0.000
z 0.000 0.000 -20.856
Traceless
 xyz
x 4.108 0.000 0.000
y 0.000 -2.350 0.000
z 0.000 0.000 -1.758
Polar
3z2-r2-3.516
x2-y24.305
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.575 0.000 0.000
y 0.000 3.920 0.000
z 0.000 0.000 6.867


<r2> (average value of r2) Å2
<r2> 25.342
(<r2>)1/2 5.034

State 2 (1Σ)

Jump to S1C1
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-326.523135
Energy at 298.15K-326.521425
HF Energy-326.523135
Nuclear repulsion energy27.380986
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 HF/6-311G**
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 1152 1047 65.57      

Unscaled Zero Point Vibrational Energy (zpe) 576.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 523.3 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 HF/6-311G**
B
0.76166

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.487
C2 0.000 0.000 -1.136

Atom - Atom Distances (Å)
  Si1 C2
Si11.6234
C21.6234

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.493      
2 C -0.493      


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 1.760 1.760
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.065 0.000 0.000
y 0.000 -20.065 0.000
z 0.000 0.000 -15.939
Traceless
 xyz
x -2.063 0.000 0.000
y 0.000 -2.063 0.000
z 0.000 0.000 4.126
Polar
3z2-r28.251
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 -1.956 0.000 0.000
y 0.000 -1.956 0.000
z 0.000 0.000 7.838


<r2> (average value of r2) Å2
<r2> 22.742
(<r2>)1/2 4.769