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

using model chemistry: B1B95/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 B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-327.404538
Energy at 298.15K-327.402804
HF Energy-327.404538
Nuclear repulsion energy25.894486
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 B1B95/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 987 946 17.23      

Unscaled Zero Point Vibrational Energy (zpe) 493.2 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 472.8 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 B1B95/aug-cc-pVTZ
B
0.68121

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.515
C2 0.000 0.000 -1.202

Atom - Atom Distances (Å)
  Si1 C2
Si11.7166
C21.7166

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.259      
2 C -0.259      


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 -20.611 0.000 0.000
y 0.000 -17.347 0.000
z 0.000 0.000 -19.712
Traceless
 xyz
x -2.082 0.000 0.000
y 0.000 2.815 0.000
z 0.000 0.000 -0.733
Polar
3z2-r2-1.466
x2-y2-3.265
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.573 0.000 0.000
y 0.000 5.042 0.000
z 0.000 0.000 8.703


<r2> (average value of r2) Å2
<r2> 24.383
(<r2>)1/2 4.938

State 2 (1Σ)

Jump to S1C1
Energy calculated at B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-327.361006
Energy at 298.15K-327.359290
HF Energy-327.361006
Nuclear repulsion energy27.095900
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 B1B95/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1099 1054 10.43      

Unscaled Zero Point Vibrational Energy (zpe) 549.6 cm-1
Scaled (by 0.9585) 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 B1B95/aug-cc-pVTZ
B
0.74588

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.492
C2 0.000 0.000 -1.148

Atom - Atom Distances (Å)
  Si1 C2
Si11.6405
C21.6405

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.261      
2 C -0.261      


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 2.201 2.201
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.018 0.000 0.000
y 0.000 -20.018 0.000
z 0.000 0.000 -15.242
Traceless
 xyz
x -2.388 0.000 0.000
y 0.000 -2.388 0.000
z 0.000 0.000 4.776
Polar
3z2-r29.552
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 14.288 0.000 0.000
y 0.000 14.288 0.000
z 0.000 0.000 8.515


<r2> (average value of r2) Å2
<r2> 22.812
(<r2>)1/2 4.776