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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-327.412629
Energy at 298.15K-327.410894
HF Energy-327.412629
Nuclear repulsion energy25.851451
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 B3LYPultrafine/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 978 946 16.81      

Unscaled Zero Point Vibrational Energy (zpe) 489.1 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 472.8 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 B3LYPultrafine/cc-pVTZ
B
0.67894

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.516
C2 0.000 0.000 -1.204

Atom - Atom Distances (Å)
  Si1 C2
Si11.7195
C21.7195

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.200      
2 C -0.200      


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 1.674 1.674
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.261 0.000 0.000
y 0.000 -20.521 0.000
z 0.000 0.000 -19.873
Traceless
 xyz
x 2.936 0.000 0.000
y 0.000 -1.954 0.000
z 0.000 0.000 -0.982
Polar
3z2-r2-1.965
x2-y23.260
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.216 0.000 0.000
y 0.000 6.960 0.000
z 0.000 0.000 8.199


<r2> (average value of r2) Å2
<r2> 24.421
(<r2>)1/2 4.942

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-327.368927
Energy at 298.15K-327.367208
HF Energy-327.368927
Nuclear repulsion energy27.005808
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 B3LYPultrafine/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 1078 1042 8.63      

Unscaled Zero Point Vibrational Energy (zpe) 539.1 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 521.1 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 B3LYPultrafine/cc-pVTZ
B
0.74093

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.494
C2 0.000 0.000 -1.152

Atom - Atom Distances (Å)
  Si1 C2
Si11.6460
C21.6460

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.206      
2 C -0.206      


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 2.147 2.147
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.963 0.000 0.000
y 0.000 -19.963 0.000
z 0.000 0.000 -15.432
Traceless
 xyz
x -2.266 0.000 0.000
y 0.000 -2.266 0.000
z 0.000 0.000 4.531
Polar
3z2-r29.063
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 39.520 0.000 0.000
y 0.000 39.520 0.000
z 0.000 0.000 8.103


<r2> (average value of r2) Å2
<r2> 22.904
(<r2>)1/2 4.786