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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-327.178049
Energy at 298.15K-327.176305
HF Energy-327.178049
Nuclear repulsion energy25.428432
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/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 937 932 10.37      

Unscaled Zero Point Vibrational Energy (zpe) 468.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 466.0 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 PBEPBE/cc-pVDZ
B
0.65691

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.524
C2 0.000 0.000 -1.224

Atom - Atom Distances (Å)
  Si1 C2
Si11.7481
C21.7481

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/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.190      
2 C -0.190      


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 1.484 1.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.195 0.000 0.000
y 0.000 -20.442 0.000
z 0.000 0.000 -19.458
Traceless
 xyz
x 2.755 0.000 0.000
y 0.000 -2.116 0.000
z 0.000 0.000 -0.639
Polar
3z2-r2-1.279
x2-y23.247
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.566 0.000 0.000
y 0.000 5.409 0.000
z 0.000 0.000 7.825


<r2> (average value of r2) Å2
<r2> 24.721
(<r2>)1/2 4.972

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-327.141934
Energy at 298.15K-327.140212
HF Energy-327.141934
Nuclear repulsion energy26.653043
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/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 1056 1049 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 527.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 524.7 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/cc-pVDZ
B
0.72170

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.500
C2 0.000 0.000 -1.167

Atom - Atom Distances (Å)
  Si1 C2
Si11.6678
C21.6678

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/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.183      
2 C -0.183      


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 2.027 2.027
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.918 0.000 0.000
y 0.000 -19.918 0.000
z 0.000 0.000 -15.058
Traceless
 xyz
x -2.430 0.000 0.000
y 0.000 -2.430 0.000
z 0.000 0.000 4.860
Polar
3z2-r29.721
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 3.566 0.000 0.000
y 0.000 5.409 0.000
z 0.000 0.000 7.825


<r2> (average value of r2) Å2
<r2> 23.111
(<r2>)1/2 4.807