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

using model chemistry: HF/aug-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 HF/aug-cc-pVTZ
 hartrees
Energy at 0K-326.645466
Energy at 298.15K-326.643691
HF Energy-326.645466
Nuclear repulsion energy25.189555
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 HF/aug-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 819 746 22.00      

Unscaled Zero Point Vibrational Energy (zpe) 409.7 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 373.0 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 HF/aug-cc-pVTZ
B
0.64462

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.529
C2 0.000 0.000 -1.235

Atom - Atom Distances (Å)
  Si1 C2
Si11.7647
C21.7647

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-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 0.624 0.624
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.171 0.000 0.000
y 0.000 -21.552 0.000
z 0.000 0.000 -20.450
Traceless
 xyz
x 3.830 0.000 0.000
y 0.000 -2.742 0.000
z 0.000 0.000 -1.089
Polar
3z2-r2-2.177
x2-y24.381
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.213 0.000 0.000
y 0.000 6.389 0.000
z 0.000 0.000 8.187


<r2> (average value of r2) Å2
<r2> 25.398
(<r2>)1/2 5.040

State 2 (1Σ)

Jump to S1C1
Energy calculated at HF/aug-cc-pVTZ
 hartrees
Energy at 0K-326.535022
Energy at 298.15K-326.533310
HF Energy-326.535022
Nuclear repulsion energy27.299019
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 HF/aug-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 1131 1029 80.36      

Unscaled Zero Point Vibrational Energy (zpe) 565.3 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 514.7 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 HF/aug-cc-pVTZ
B
0.75711

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.488
C2 0.000 0.000 -1.140

Atom - Atom Distances (Å)
  Si1 C2
Si11.6283
C21.6283

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.276      
2 C -0.276      


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 1.925 1.925
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.368 0.000 0.000
y 0.000 -20.368 0.000
z 0.000 0.000 -15.571
Traceless
 xyz
x -2.399 0.000 0.000
y 0.000 -2.399 0.000
z 0.000 0.000 4.798
Polar
3z2-r29.595
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 1.308 0.000 0.000
y 0.000 1.308 0.000
z 0.000 0.000 8.488


<r2> (average value of r2) Å2
<r2> 22.858
(<r2>)1/2 4.781