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 AlNC (Aluminum isocyanide)

using model chemistry: PBEPBE/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at PBEPBE/aug-cc-pCVTZ
 hartrees
Energy at 0K-335.060927
Energy at 298.15K 
HF Energy-335.060927
Nuclear repulsion energy57.820091
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 PBEPBE/aug-cc-pCVTZ
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 2037 2037 409.01 87.44 0.10 0.19
2 Σ 526 526 171.69 22.46 0.63 0.77
3 Π 72 72 3.37 6.37 0.75 0.86
3 Π 72 72 3.37 6.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1352.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1352.9 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 PBEPBE/aug-cc-pCVTZ
B
0.19370

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.213
N2 0.000 0.000 -0.664
C3 0.000 0.000 -1.853

Atom - Atom Distances (Å)
  Al1 N2 C3
Al11.87703.0655
N21.87701.1885
C33.06551.1885

picture of Aluminum isocyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Al1 N2 C3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.365      
2 N -0.272      
3 C -0.093      


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 3.195 3.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.343 0.000 0.000
y 0.000 -22.343 0.000
z 0.000 0.000 -31.746
Traceless
 xyz
x 4.701 0.000 0.000
y 0.000 4.701 0.000
z 0.000 0.000 -9.403
Polar
3z2-r2-18.806
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 7.565 0.000 0.000
y 0.000 7.565 0.000
z 0.000 0.000 9.836


<r2> (average value of r2) Å2
<r2> 58.717
(<r2>)1/2 7.663