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

using model chemistry: mPW1PW91/aug-cc-pVTZ

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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-327.387298
Energy at 298.15K-327.385564
HF Energy-327.387298
Nuclear repulsion energy25.924831
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 mPW1PW91/aug-cc-pVTZ
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 989 947 18.73      

Unscaled Zero Point Vibrational Energy (zpe) 494.4 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 473.7 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 mPW1PW91/aug-cc-pVTZ
B
0.68280

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

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 -1.200

Atom - Atom Distances (Å)
  Si1 C2
Si11.7146
C21.7146

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.317      
2 C -0.317      


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 1.579 1.579
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.294 0.000 0.000
y 0.000 -20.627 0.000
z 0.000 0.000 -19.704
Traceless
 xyz
x 2.872 0.000 0.000
y 0.000 -2.128 0.000
z 0.000 0.000 -0.744
Polar
3z2-r2-1.487
x2-y23.333
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.049 0.000 0.000
y 0.000 7.782 0.000
z 0.000 0.000 8.753


<r2> (average value of r2) Å2
<r2> 24.345
(<r2>)1/2 4.934

State 2 (1Σ)

Jump to S1C1
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-327.337933
Energy at 298.15K-327.336217
HF Energy-327.337933
Nuclear repulsion energy27.092337
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 mPW1PW91/aug-cc-pVTZ
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 1099 1053 11.26      

Unscaled Zero Point Vibrational Energy (zpe) 549.7 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 526.6 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 mPW1PW91/aug-cc-pVTZ
B
0.74569

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.492
C2 0.000 0.000 -1.149

Atom - Atom Distances (Å)
  Si1 C2
Si11.6407
C21.6407

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.352      
2 C -0.352      


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 2.201 2.201
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.060 0.000 0.000
y 0.000 -20.060 0.000
z 0.000 0.000 -15.226
Traceless
 xyz
x -2.417 0.000 0.000
y 0.000 -2.417 0.000
z 0.000 0.000 4.833
Polar
3z2-r29.667
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 22.719 0.000 0.000
y 0.000 22.719 0.000
z 0.000 0.000 8.568


<r2> (average value of r2) Å2
<r2> 22.829
(<r2>)1/2 4.778