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

using model chemistry: B3LYPultrafine/aug-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 B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-327.395750
Energy at 298.15K-327.394011
HF Energy-327.395750
Nuclear repulsion energy25.622813
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/aug-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 956 927 18.09      

Unscaled Zero Point Vibrational Energy (zpe) 477.7 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 463.6 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/aug-cc-pVDZ
B
0.66699

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-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 -1.214

Atom - Atom Distances (Å)
  Si1 C2
Si11.7348
C21.7348

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/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.270      
2 C -0.270      


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 1.750 1.750
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.941 0.000 0.000
y 0.000 -17.452 0.000
z 0.000 0.000 -20.029
Traceless
 xyz
x -2.200 0.000 0.000
y 0.000 3.033 0.000
z 0.000 0.000 -0.833
Polar
3z2-r2-1.666
x2-y2-3.489
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.930 0.000 0.000
y 0.000 4.960 0.000
z 0.000 0.000 8.912


<r2> (average value of r2) Å2
<r2> 24.803
(<r2>)1/2 4.980

State 2 (1Σ)

Jump to S1C1
Energy calculated at B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-327.350901
Energy at 298.15K-327.349179
HF Energy-327.350901
Nuclear repulsion energy26.777548
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/aug-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 1055 1023 9.51      

Unscaled Zero Point Vibrational Energy (zpe) 527.3 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 511.7 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 B3LYPultrafine/aug-cc-pVDZ
B
0.72846

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.498
C2 0.000 0.000 -1.162

Atom - Atom Distances (Å)
  Si1 C2
Si11.6600
C21.6600

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/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.174      
2 C -0.174      


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 2.252 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.307 0.000 0.000
y 0.000 -20.307 0.000
z 0.000 0.000 -15.538
Traceless
 xyz
x -2.384 0.000 0.000
y 0.000 -2.384 0.000
z 0.000 0.000 4.769
Polar
3z2-r29.538
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 -68.277 0.000 0.000
y 0.000 -68.277 0.000
z 0.000 0.000 8.676


<r2> (average value of r2) Å2
<r2> 23.264
(<r2>)1/2 4.823