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

using model chemistry: mPW1PW91/aug-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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-327.370651
Energy at 298.15K-327.368914
HF Energy-327.370651
Nuclear repulsion energy25.699278
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-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 967 927 18.32      

Unscaled Zero Point Vibrational Energy (zpe) 483.4 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 463.2 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-pVDZ
B
0.67097

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.519
C2 0.000 0.000 -1.211

Atom - Atom Distances (Å)
  Si1 C2
Si11.7297
C21.7297

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-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.303      
2 C -0.303      


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 1.581 1.581
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.308 0.000 0.000
y 0.000 -20.823 0.000
z 0.000 0.000 -19.762
Traceless
 xyz
x 2.985 0.000 0.000
y 0.000 -2.288 0.000
z 0.000 0.000 -0.696
Polar
3z2-r2-1.393
x2-y23.516
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.946 0.000 0.000
y 0.000 8.063 0.000
z 0.000 0.000 8.913


<r2> (average value of r2) Å2
<r2> 24.618
(<r2>)1/2 4.962

State 2 (1Σ)

Jump to S1C1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-327.320388
Energy at 298.15K-327.318670
HF Energy-327.320388
Nuclear repulsion energy26.870447
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-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 1081 1036 10.31      

Unscaled Zero Point Vibrational Energy (zpe) 540.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 517.8 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 mPW1PW91/aug-cc-pVDZ
B
0.73352

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.496
C2 0.000 0.000 -1.158

Atom - Atom Distances (Å)
  Si1 C2
Si11.6543
C21.6543

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-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.232      
2 C -0.232      


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 2.226 2.226
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.190 0.000 0.000
y 0.000 -20.190 0.000
z 0.000 0.000 -15.244
Traceless
 xyz
x -2.473 0.000 0.000
y 0.000 -2.473 0.000
z 0.000 0.000 4.946
Polar
3z2-r29.891
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 62.227 0.000 0.000
y 0.000 62.227 0.000
z 0.000 0.000 8.654


<r2> (average value of r2) Å2
<r2> 23.074
(<r2>)1/2 4.804