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

using model chemistry: PBEPBE/aug-cc-pVQZ

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 PBEPBE/aug-cc-pVQZ
 hartrees
Energy at 0K-327.203755
Energy at 298.15K-327.202015
HF Energy-327.203755
Nuclear repulsion energy25.716926
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 PBEPBE/aug-cc-pVQZ
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 957 957 13.23      

Unscaled Zero Point Vibrational Energy (zpe) 478.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 478.7 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 PBEPBE/aug-cc-pVQZ
B
0.67190

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.519
C2 0.000 0.000 -1.210

Atom - Atom Distances (Å)
  Si1 C2
Si11.7285
C21.7285

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.637      
2 C -0.637      


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 1.705 1.705
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.682 0.000 0.000
y 0.000 -17.479 0.000
z 0.000 0.000 -19.860
Traceless
 xyz
x -2.012 0.000 0.000
y 0.000 2.792 0.000
z 0.000 0.000 -0.779
Polar
3z2-r2-1.558
x2-y2-3.203
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.752 0.000 0.000
y 0.000 5.181 0.000
z 0.000 0.000 9.015


<r2> (average value of r2) Å2
<r2> 24.628
(<r2>)1/2 4.963

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pVQZ
 hartrees
Energy at 0K-327.168072
Energy at 298.15K-327.166352
HF Energy-327.168072
Nuclear repulsion energy26.939762
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 PBEPBE/aug-cc-pVQZ
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 1073 1073 4.61      

Unscaled Zero Point Vibrational Energy (zpe) 536.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 536.7 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 PBEPBE/aug-cc-pVQZ
B
0.73731

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.495
C2 0.000 0.000 -1.155

Atom - Atom Distances (Å)
  Si1 C2
Si11.6500
C21.6500

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.683      
2 C -0.683      


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 2.217 2.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.140 0.000 0.000
y 0.000 -20.140 0.000
z 0.000 0.000 -15.456
Traceless
 xyz
x -2.342 0.000 0.000
y 0.000 -2.342 0.000
z 0.000 0.000 4.683
Polar
3z2-r29.367
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 7.752 0.000 0.000
y 0.000 5.181 0.000
z 0.000 0.000 9.015


<r2> (average value of r2) Å2
<r2> 23.039
(<r2>)1/2 4.800