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

using model chemistry: B2PLYP/cc-pVDZ

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 B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-327.209138
Energy at 298.15K-327.207413
HF Energy-327.153485
Nuclear repulsion energy25.824500
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 B2PLYP/cc-pVDZ
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 1038 994 26.34      

Unscaled Zero Point Vibrational Energy (zpe) 519.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 497.0 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 B2PLYP/cc-pVDZ
B
0.67753

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

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 -1.205

Atom - Atom Distances (Å)
  Si1 C2
Si11.7213
C21.7213

picture of silicon monocarbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.225      
2 C -0.225      


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 1.594 1.594
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.236 0.000 0.000
y 0.000 -20.456 0.000
z 0.000 0.000 -19.664
Traceless
 xyz
x 2.824 0.000 0.000
y 0.000 -2.007 0.000
z 0.000 0.000 -0.818
Polar
3z2-r2-1.635
x2-y23.221
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.512 0.000 0.000
y 0.000 6.076 0.000
z 0.000 0.000 7.654


<r2> (average value of r2) Å2
<r2> 24.385
(<r2>)1/2 4.938

State 2 (1Σ)

Jump to S1C1
Energy calculated at B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-327.177891
Energy at 298.15K-327.176163
HF Energy-327.087851
Nuclear repulsion energy26.548341
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 B2PLYP/cc-pVDZ
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 1025 982 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 512.7 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 491.0 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 B2PLYP/cc-pVDZ
B
0.71604

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.502
C2 0.000 0.000 -1.172

Atom - Atom Distances (Å)
  Si1 C2
Si11.6743
C21.6743

picture of silicon monocarbide state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.174      
2 C -0.174      


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 2.086 2.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.147 0.000 0.000
y 0.000 -20.147 0.000
z 0.000 0.000 -15.182
Traceless
 xyz
x -2.483 0.000 0.000
y 0.000 -2.483 0.000
z 0.000 0.000 4.966
Polar
3z2-r29.931
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 -12.981 0.000 0.000
y 0.000 -12.981 0.000
z 0.000 0.000 7.675


<r2> (average value of r2) Å2
<r2> 23.324
(<r2>)1/2 4.830