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

using model chemistry: SVWN/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 SVWN/6-311G*
 hartrees
Energy at 0K-326.267939
Energy at 298.15K-326.266204
HF Energy-326.267939
Nuclear repulsion energy25.886335
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 SVWN/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 987 977 9.50      

Unscaled Zero Point Vibrational Energy (zpe) 493.4 cm-1
Scaled (by 0.9904) Zero Point Vibrational Energy (zpe) 488.7 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 SVWN/6-311G*
B
0.68078

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

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 -1.202

Atom - Atom Distances (Å)
  Si1 C2
Si11.7172
C21.7172

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.318      
2 C -0.318      


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 1.653 1.653
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.455 0.000 0.000
y 0.000 -17.144 0.000
z 0.000 0.000 -19.999
Traceless
 xyz
x -1.884 0.000 0.000
y 0.000 3.083 0.000
z 0.000 0.000 -1.199
Polar
3z2-r2-2.398
x2-y2-3.311
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.915 0.000 0.000
y 0.000 3.320 0.000
z 0.000 0.000 7.908


<r2> (average value of r2) Å2
<r2> 24.376
(<r2>)1/2 4.937

State 2 (1Σ)

Jump to S1C1
Energy calculated at SVWN/6-311G*
 hartrees
Energy at 0K-326.240917
Energy at 298.15K-326.239202
HF Energy-326.240917
Nuclear repulsion energy27.131877
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 SVWN/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 1113 1102 3.51      

Unscaled Zero Point Vibrational Energy (zpe) 556.3 cm-1
Scaled (by 0.9904) Zero Point Vibrational Energy (zpe) 551.0 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 SVWN/6-311G*
B
0.74787

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.491
C2 0.000 0.000 -1.147

Atom - Atom Distances (Å)
  Si1 C2
Si11.6383
C21.6383

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.314      
2 C -0.314      


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 2.140 2.140
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.889 0.000 0.000
y 0.000 -19.889 0.000
z 0.000 0.000 -15.542
Traceless
 xyz
x -2.174 0.000 0.000
y 0.000 -2.174 0.000
z 0.000 0.000 4.347
Polar
3z2-r28.695
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 4.915 0.000 0.000
y 0.000 3.320 0.000
z 0.000 0.000 7.908


<r2> (average value of r2) Å2
<r2> 22.791
(<r2>)1/2 4.774