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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-323.459927
Energy at 298.15K-323.458191
HF Energy-323.459927
Nuclear repulsion energy26.061453
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/STO-3G
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 1085 1004 5.89      

Unscaled Zero Point Vibrational Energy (zpe) 542.7 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 502.1 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/STO-3G
B
0.69002

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

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 -1.194

Atom - Atom Distances (Å)
  Si1 C2
Si11.7056
C21.7056

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.282      
2 C -0.282      


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 1.174 1.174
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.582 0.000 0.000
y 0.000 -15.639 0.000
z 0.000 0.000 -16.746
Traceless
 xyz
x 2.611 0.000 0.000
y 0.000 -0.475 0.000
z 0.000 0.000 -2.135
Polar
3z2-r2-4.271
x2-y22.057
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.548 0.000 0.000
y 0.000 1.662 0.000
z 0.000 0.000 3.813


<r2> (average value of r2) Å2
<r2> 21.789
(<r2>)1/2 4.668

State 2 (1Σ)

Jump to S1C1
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-323.428523
Energy at 298.15K-323.426809
HF Energy-323.428523
Nuclear repulsion energy27.596184
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/STO-3G
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 1247 1153 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 623.3 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 576.7 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 BLYP/STO-3G
B
0.77368

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.483
C2 0.000 0.000 -1.128

Atom - Atom Distances (Å)
  Si1 C2
Si11.6108
C21.6108

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.290      
2 C -0.290      


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 1.517 1.517
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.477 0.000 0.000
y 0.000 -15.477 0.000
z 0.000 0.000 -13.148
Traceless
 xyz
x -1.164 0.000 0.000
y 0.000 -1.164 0.000
z 0.000 0.000 2.329
Polar
3z2-r24.658
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 1.548 0.000 0.000
y 0.000 1.662 0.000
z 0.000 0.000 3.813


<r2> (average value of r2) Å2
<r2> 20.079
(<r2>)1/2 4.481