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All results from a given calculation for AlC (Aluminum carbide)

using model chemistry: ROMP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 4Σ
Energy calculated at ROMP2/3-21G*
 hartrees
Energy at 0K-278.236268
Energy at 298.15K-278.234942
HF Energy-278.166148
Nuclear repulsion energy20.906728
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 ROMP2/3-21G*
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 684 684        

Unscaled Zero Point Vibrational Energy (zpe) 341.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 341.9 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 ROMP2/3-21G*
B
0.52081

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.623
C2 0.000 0.000 -1.351

Atom - Atom Distances (Å)
  Al1 C2
Al11.9741
C21.9741

picture of Aluminum carbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.420      
2 C -0.420      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 28.540
(<r2>)1/2 5.342