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

using model chemistry: B2PLYP/cc-pV(T+d)Z

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 B2PLYP/cc-pV(T+d)Z
 hartrees
Energy at 0K-327.240695
Energy at 298.15K-327.238975
HF Energy-327.174019
Nuclear repulsion energy26.104803
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 B2PLYP/cc-pV(T+d)Z
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 46.40      

Unscaled Zero Point Vibrational Energy (zpe) 536.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 536.6 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 B2PLYP/cc-pV(T+d)Z
B
0.69232

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.511
C2 0.000 0.000 -1.192

Atom - Atom Distances (Å)
  Si1 C2
Si11.7028
C21.7028

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.219      
2 C -0.219      


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 1.760 1.760
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.479 0.000 0.000
y 0.000 -17.349 0.000
z 0.000 0.000 -19.812
Traceless
 xyz
x -1.899 0.000 0.000
y 0.000 2.797 0.000
z 0.000 0.000 -0.898
Polar
3z2-r2-1.795
x2-y2-3.131
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.220 0.000 0.000
y 0.000 4.197 0.000
z 0.000 0.000 7.956


<r2> (average value of r2) Å2
<r2> 24.178
(<r2>)1/2 4.917

State 2 (1Σ)

Jump to S1C1
Energy calculated at B2PLYP/cc-pV(T+d)Z
 hartrees
Energy at 0K-327.209387
Energy at 298.15K-327.207663
HF Energy-327.109248
Nuclear repulsion energy26.855493
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 B2PLYP/cc-pV(T+d)Z
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 1046 1046 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 523.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 523.0 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 B2PLYP/cc-pV(T+d)Z
B
0.73271

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.497
C2 0.000 0.000 -1.159

Atom - Atom Distances (Å)
  Si1 C2
Si11.6552
C21.6552

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.255      
2 C -0.255      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x -15.705 0.000 0.000
y 0.000 -15.705 0.000
z 0.000 0.000 8.234


<r2> (average value of r2) Å2
<r2> 23.077
(<r2>)1/2 4.804