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

using model chemistry: B1B95/6-31G(2df,p)

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 B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-327.371833
Energy at 298.15K-327.370099
HF Energy-327.371833
Nuclear repulsion energy25.957351
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 B1B95/6-31G(2df,p)
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 992 950 10.15      

Unscaled Zero Point Vibrational Energy (zpe) 495.9 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 474.9 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 B1B95/6-31G(2df,p)
B
0.68452

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.514
C2 0.000 0.000 -1.199

Atom - Atom Distances (Å)
  Si1 C2
Si11.7125
C21.7125

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.101      
2 C -0.101      


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 1.255 1.255
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.997 0.000 0.000
y 0.000 -20.143 0.000
z 0.000 0.000 -19.196
Traceless
 xyz
x 2.673 0.000 0.000
y 0.000 -2.046 0.000
z 0.000 0.000 -0.626
Polar
3z2-r2-1.252
x2-y23.146
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.822 0.000 0.000
y 0.000 5.675 0.000
z 0.000 0.000 7.506


<r2> (average value of r2) Å2
<r2> 24.046
(<r2>)1/2 4.904

State 2 (1Σ)

Jump to S1C1
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-327.328958
Energy at 298.15K-327.327243
HF Energy-327.328958
Nuclear repulsion energy27.173278
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 B1B95/6-31G(2df,p)
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 1108 1061 4.88      

Unscaled Zero Point Vibrational Energy (zpe) 553.9 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 530.5 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 B1B95/6-31G(2df,p)
B
0.75015

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.491
C2 0.000 0.000 -1.145

Atom - Atom Distances (Å)
  Si1 C2
Si11.6358
C21.6358

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.104      
2 C -0.104      


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 1.772 1.772
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.569 0.000 0.000
y 0.000 -19.569 0.000
z 0.000 0.000 -14.906
Traceless
 xyz
x -2.331 0.000 0.000
y 0.000 -2.331 0.000
z 0.000 0.000 4.663
Polar
3z2-r29.326
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 10.780 0.000 0.000
y 0.000 10.780 0.000
z 0.000 0.000 7.497


<r2> (average value of r2) Å2
<r2> 22.490
(<r2>)1/2 4.742