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

using model chemistry: HF/aug-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/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-326.646952
Energy at 298.15K-326.645200
HF Energy-326.646952
Nuclear repulsion energy25.273073
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/aug-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 821 821 19.31      

Unscaled Zero Point Vibrational Energy (zpe) 410.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 410.4 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/aug-cc-pV(T+d)Z
B
0.64890

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-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
Si11.7588
C21.7588

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/aug-cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.217      
2 C -0.217      


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 0.620 0.620
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.162 0.000 0.000
y 0.000 -21.535 0.000
z 0.000 0.000 -20.406
Traceless
 xyz
x 3.809 0.000 0.000
y 0.000 -2.751 0.000
z 0.000 0.000 -1.058
Polar
3z2-r2-2.116
x2-y24.374
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.218 0.000 0.000
y 0.000 6.394 0.000
z 0.000 0.000 8.189


<r2> (average value of r2) Å2
<r2> 25.297
(<r2>)1/2 5.030

State 2 (1Σ)

Jump to S1C1
Energy calculated at HF/aug-cc-pV(T+d)Z
 hartrees
Energy at 0K-326.537195
Energy at 298.15K-326.535493
HF Energy-326.537195
Nuclear repulsion energy27.386842
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/aug-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 1134 1134 81.77      

Unscaled Zero Point Vibrational Energy (zpe) 566.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 566.9 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/aug-cc-pV(T+d)Z
B
0.76199

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-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
Si11.6231
C21.6231

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/aug-cc-pV(T+d)Z Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.315      
2 C -0.315      


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 1.910 1.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.325 0.000 0.000
y 0.000 -20.325 0.000
z 0.000 0.000 -15.560
Traceless
 xyz
x -2.382 0.000 0.000
y 0.000 -2.382 0.000
z 0.000 0.000 4.764
Polar
3z2-r29.529
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 1.182 0.000 0.000
y 0.000 1.182 0.000
z 0.000 0.000 8.461


<r2> (average value of r2) Å2
<r2> 22.767
(<r2>)1/2 4.771