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

using model chemistry: PBE1PBE/TZVP

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 PBE1PBE/TZVP
 hartrees
Energy at 0K-327.209095
Energy at 298.15K-327.207360
HF Energy-327.209095
Nuclear repulsion energy25.817539
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 PBE1PBE/TZVP
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 981 941 17.77      

Unscaled Zero Point Vibrational Energy (zpe) 490.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 470.5 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 PBE1PBE/TZVP
B
0.67716

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.517
C2 0.000 0.000 -1.205

Atom - Atom Distances (Å)
  Si1 C2
Si11.7217
C21.7217

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.210      
2 C -0.210      


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 1.562 1.562
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.142 0.000 0.000
y 0.000 -20.604 0.000
z 0.000 0.000 -20.043
Traceless
 xyz
x 3.181 0.000 0.000
y 0.000 -2.012 0.000
z 0.000 0.000 -1.170
Polar
3z2-r2-2.339
x2-y23.462
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.560 0.000 0.000
y 0.000 6.150 0.000
z 0.000 0.000 8.610


<r2> (average value of r2) Å2
<r2> 24.482
(<r2>)1/2 4.948

State 2 (1Σ)

Jump to S1C1
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-327.160860
Energy at 298.15K-327.159144
HF Energy-327.160860
Nuclear repulsion energy26.994174
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 PBE1PBE/TZVP
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 1098 1054 10.77      

Unscaled Zero Point Vibrational Energy (zpe) 548.9 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 526.8 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 PBE1PBE/TZVP
B
0.74029

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

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 -1.153

Atom - Atom Distances (Å)
  Si1 C2
Si11.6467
C21.6467

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.213      
2 C -0.213      


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 2.202 2.202
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.021 0.000 0.000
y 0.000 -20.021 0.000
z 0.000 0.000 -15.378
Traceless
 xyz
x -2.321 0.000 0.000
y 0.000 -2.321 0.000
z 0.000 0.000 4.643
Polar
3z2-r29.286
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 19.431 0.000 0.000
y 0.000 19.431 0.000
z 0.000 0.000 8.387


<r2> (average value of r2) Å2
<r2> 22.927
(<r2>)1/2 4.788