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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-327.199473
Energy at 298.15K-327.197737
HF Energy-327.199473
Nuclear repulsion energy25.857764
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 HSEh1PBE/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 982 938 11.80      

Unscaled Zero Point Vibrational Energy (zpe) 491.2 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 468.7 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 HSEh1PBE/6-31G**
B
0.67928

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.516
C2 0.000 0.000 -1.203

Atom - Atom Distances (Å)
  Si1 C2
Si11.7191
C21.7191

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.211      
2 C -0.211      


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 1.094 1.094
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.876 0.000 0.000
y 0.000 -20.258 0.000
z 0.000 0.000 -19.775
Traceless
 xyz
x 3.140 0.000 0.000
y 0.000 -1.932 0.000
z 0.000 0.000 -1.208
Polar
3z2-r2-2.416
x2-y23.382
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.389 0.000 0.000
y 0.000 5.506 0.000
z 0.000 0.000 7.564


<r2> (average value of r2) Å2
<r2> 24.260
(<r2>)1/2 4.925

State 2 (1Σ)

Jump to S1C1
Energy calculated at HSEh1PBE/6-31G**
 hartrees
Energy at 0K-327.152507
Energy at 298.15K-327.150790
HF Energy-327.152507
Nuclear repulsion energy27.053949
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 HSEh1PBE/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 1106 1056 6.20      

Unscaled Zero Point Vibrational Energy (zpe) 553.1 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 527.8 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 HSEh1PBE/6-31G**
B
0.74358

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.493
C2 0.000 0.000 -1.150

Atom - Atom Distances (Å)
  Si1 C2
Si11.6430
C21.6430

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.182      
2 C -0.182      


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 1.761 1.761
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.648 0.000 0.000
y 0.000 -19.648 0.000
z 0.000 0.000 -15.344
Traceless
 xyz
x -2.152 0.000 0.000
y 0.000 -2.152 0.000
z 0.000 0.000 4.304
Polar
3z2-r28.609
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 11.708 0.000 0.000
y 0.000 11.708 0.000
z 0.000 0.000 7.498


<r2> (average value of r2) Å2
<r2> 22.714
(<r2>)1/2 4.766