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

using model chemistry: HF/cc-pV(T+d)Z

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 HF/cc-pV(T+d)Z
 hartrees
Energy at 0K-326.646461
Energy at 298.15K-326.644686
HF Energy-326.646461
Nuclear repulsion energy25.268804
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 HF/cc-pV(T+d)Z
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 822 748 21.54      

Unscaled Zero Point Vibrational Energy (zpe) 410.8 cm-1
Scaled (by 0.9103) Zero Point Vibrational Energy (zpe) 373.9 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 HF/cc-pV(T+d)Z
B
0.64868

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.528
C2 0.000 0.000 -1.231

Atom - Atom Distances (Å)
  Si1 C2
Si11.7591
C21.7591

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.192      
2 C -0.192      


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 0.583 0.583
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.333 0.000 0.000
y 0.000 -17.030 0.000
z 0.000 0.000 -20.381
Traceless
 xyz
x -2.628 0.000 0.000
y 0.000 3.828 0.000
z 0.000 0.000 -1.200
Polar
3z2-r2-2.400
x2-y2-4.303
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.397 0.000 0.000
y 0.000 5.064 0.000
z 0.000 0.000 7.560


<r2> (average value of r2) Å2
<r2> 25.227
(<r2>)1/2 5.023

State 2 (1Σ)

Jump to S1C1
Energy calculated at HF/cc-pV(T+d)Z
 hartrees
Energy at 0K-326.536680
Energy at 298.15K-326.534968
HF Energy-326.536680
Nuclear repulsion energy27.398359
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 HF/cc-pV(T+d)Z
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 1138 1035 73.52      

Unscaled Zero Point Vibrational Energy (zpe) 568.7 cm-1
Scaled (by 0.9103) Zero Point Vibrational Energy (zpe) 517.7 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 HF/cc-pV(T+d)Z
B
0.76263

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pV(T+d)Z

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.487
C2 0.000 0.000 -1.136

Atom - Atom Distances (Å)
  Si1 C2
Si11.6224
C21.6224

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.287      
2 C -0.287      


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 1.813 1.813
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.122 0.000 0.000
y 0.000 -20.122 0.000
z 0.000 0.000 -15.493
Traceless
 xyz
x -2.314 0.000 0.000
y 0.000 -2.314 0.000
z 0.000 0.000 4.629
Polar
3z2-r29.258
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 -0.010 0.000 0.000
y 0.000 -0.010 0.000
z 0.000 0.000 8.054


<r2> (average value of r2) Å2
<r2> 22.659
(<r2>)1/2 4.760