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

using model chemistry: BLYP/6-311G**

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 BLYP/6-311G**
 hartrees
Energy at 0K-327.386691
Energy at 298.15K-327.384947
HF Energy-327.386691
Nuclear repulsion energy25.566851
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 BLYP/6-311G**
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 936 932 9.21      

Unscaled Zero Point Vibrational Energy (zpe) 467.8 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 466.0 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 BLYP/6-311G**
B
0.66408

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.522
C2 0.000 0.000 -1.217

Atom - Atom Distances (Å)
  Si1 C2
Si11.7386
C21.7386

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.319      
2 C -0.319      


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 1.624 1.624
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.212 0.000 0.000
y 0.000 -20.608 0.000
z 0.000 0.000 -20.103
Traceless
 xyz
x 3.143 0.000 0.000
y 0.000 -1.950 0.000
z 0.000 0.000 -1.193
Polar
3z2-r2-2.387
x2-y23.395
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.338 0.000 0.000
y 0.000 5.570 0.000
z 0.000 0.000 7.963


<r2> (average value of r2) Å2
<r2> 24.755
(<r2>)1/2 4.975

State 2 (1Σ)

Jump to S1C1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-327.353196
Energy at 298.15K-327.351472
HF Energy-327.353196
Nuclear repulsion energy26.770165
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 BLYP/6-311G**
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 1050 1046 3.32      

Unscaled Zero Point Vibrational Energy (zpe) 525.0 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 522.9 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 BLYP/6-311G**
B
0.72806

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.498
C2 0.000 0.000 -1.162

Atom - Atom Distances (Å)
  Si1 C2
Si11.6605
C21.6605

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.311      
2 C -0.311      


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 2.070 2.070
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.056 0.000 0.000
y 0.000 -20.056 0.000
z 0.000 0.000 -15.657
Traceless
 xyz
x -2.199 0.000 0.000
y 0.000 -2.199 0.000
z 0.000 0.000 4.399
Polar
3z2-r28.798
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 3.338 0.000 0.000
y 0.000 5.570 0.000
z 0.000 0.000 7.963


<r2> (average value of r2) Å2
<r2> 23.191
(<r2>)1/2 4.816