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

using model chemistry: B2PLYP/6-31G**

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/6-31G**
 hartrees
Energy at 0K-327.186702
Energy at 298.15K-327.184978
HF Energy-327.132376
Nuclear repulsion energy26.020697
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/6-31G**
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 1054 1054 19.03      

Unscaled Zero Point Vibrational Energy (zpe) 526.8 cm-1
Scaled (by 1) 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 B2PLYP/6-31G**
B
0.68786

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.512
C2 0.000 0.000 -1.196

Atom - Atom Distances (Å)
  Si1 C2
Si11.7083
C21.7083

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/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.214      
2 C -0.214      


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 1.264 1.264
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.983 0.000 0.000
y 0.000 -20.224 0.000
z 0.000 0.000 -19.866
Traceless
 xyz
x 3.062 0.000 0.000
y 0.000 -1.800 0.000
z 0.000 0.000 -1.262
Polar
3z2-r2-2.524
x2-y23.241
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.334 0.000 0.000
y 0.000 5.934 0.000
z 0.000 0.000 7.467


<r2> (average value of r2) Å2
<r2> 24.139
(<r2>)1/2 4.913

State 2 (1Σ)

Jump to S1C1
Energy calculated at B2PLYP/6-31G**
 hartrees
Energy at 0K-327.157325
Energy at 298.15K-327.155600
HF Energy-327.068070
Nuclear repulsion energy26.748857
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/6-31G**
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 1048 1048 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 523.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 523.9 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/6-31G**
B
0.72690

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.499
C2 0.000 0.000 -1.163

Atom - Atom Distances (Å)
  Si1 C2
Si11.6618
C21.6618

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/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.135      
2 C -0.135      


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 1.817 1.817
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.883 0.000 0.000
y 0.000 -19.883 0.000
z 0.000 0.000 -15.426
Traceless
 xyz
x -2.228 0.000 0.000
y 0.000 -2.228 0.000
z 0.000 0.000 4.457
Polar
3z2-r28.914
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 -38.177 0.000 0.000
y 0.000 -38.177 0.000
z 0.000 0.000 7.443


<r2> (average value of r2) Å2
<r2> 23.089
(<r2>)1/2 4.805