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 AlCN (Aluminum monocyanide)

using model chemistry: TPSSh/6-31+G**

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 TPSSh/6-31+G**
 hartrees
Energy at 0K-335.254997
Energy at 298.15K 
HF Energy-335.254997
Nuclear repulsion energy54.206767
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 TPSSh/6-31+G**
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 2225 2141 85.85 81.45 0.12 0.21
2 Σ 458 441 162.45 21.86 0.71 0.83
3 Π 155 149 5.59 12.34 0.75 0.86
3 Π 155 149 5.59 12.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1496.2 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 1440.1 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 TPSSh/6-31+G**
B
0.16335

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.334
C2 0.000 0.000 -0.702
N3 0.000 0.000 -1.876

Atom - Atom Distances (Å)
  Al1 C2 N3
Al12.03663.2102
C22.03661.1735
N33.21021.1735

picture of Aluminum monocyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Al1 C2 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.263      
2 C -0.020      
3 N -0.243      


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 3.408 3.408
CHELPG        
AIM        
ESP        


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 6.841 0.000 0.000
y 0.000 6.841 0.000
z 0.000 0.000 9.911


<r2> (average value of r2) Å2
<r2> 66.650
(<r2>)1/2 8.164