return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYPultrafine/TZVP

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 B3LYPultrafine/TZVP
 hartrees
Energy at 0K-280.364447
Energy at 298.15K-280.363090
HF Energy-280.364447
Nuclear repulsion energy20.814131
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 B3LYPultrafine/TZVP
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 619 597 51.70      

Unscaled Zero Point Vibrational Energy (zpe) 309.6 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 298.2 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 B3LYPultrafine/TZVP
B
0.51610

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 0.626
C2 0.000 0.000 -1.357

Atom - Atom Distances (Å)
  Al1 C2
Al11.9831
C21.9831

picture of Aluminum carbide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 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 2.062 2.062
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.912 0.000 0.000
y 0.000 -17.912 0.000
z 0.000 0.000 -23.480
Traceless
 xyz
x 2.784 0.000 0.000
y 0.000 2.784 0.000
z 0.000 0.000 -5.568
Polar
3z2-r2-11.135
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 5.716 0.000 0.000
y 0.000 5.716 0.000
z 0.000 0.000 10.942


<r2> (average value of r2) Å2
<r2> 28.491
(<r2>)1/2 5.338