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

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-327.321420
Energy at 298.15K-327.319682
HF Energy-327.321420
Nuclear repulsion energy25.667345
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 B3PW91/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 965 932 15.14      

Unscaled Zero Point Vibrational Energy (zpe) 482.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 465.8 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 B3PW91/cc-pVDZ
B
0.66931

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

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 -1.212

Atom - Atom Distances (Å)
  Si1 C2
Si11.7318
C21.7318

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/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 1.444 1.444
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.084 0.000 0.000
y 0.000 -20.413 0.000
z 0.000 0.000 -19.491
Traceless
 xyz
x 2.868 0.000 0.000
y 0.000 -2.126 0.000
z 0.000 0.000 -0.742
Polar
3z2-r2-1.484
x2-y23.329
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.580 0.000 0.000
y 0.000 5.642 0.000
z 0.000 0.000 7.802


<r2> (average value of r2) Å2
<r2> 24.461
(<r2>)1/2 4.946

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-327.274786
Energy at 298.15K-327.273067
HF Energy-327.274786
Nuclear repulsion energy26.838109
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 B3PW91/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 1077 1040 7.08      

Unscaled Zero Point Vibrational Energy (zpe) 538.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 519.9 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 B3PW91/cc-pVDZ
B
0.73176

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.497
C2 0.000 0.000 -1.159

Atom - Atom Distances (Å)
  Si1 C2
Si11.6563
C21.6563

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/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 2.062 2.062
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.867 0.000 0.000
y 0.000 -19.867 0.000
z 0.000 0.000 -14.998
Traceless
 xyz
x -2.435 0.000 0.000
y 0.000 -2.435 0.000
z 0.000 0.000 4.869
Polar
3z2-r29.739
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 18.698 0.000 0.000
y 0.000 18.698 0.000
z 0.000 0.000 7.669


<r2> (average value of r2) Å2
<r2> 22.916
(<r2>)1/2 4.787