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: mPW1PW91/6-31G(2df,p)

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 mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-335.214788
Energy at 298.15K 
HF Energy-335.214788
Nuclear repulsion energy54.824000
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 mPW1PW91/6-31G(2df,p)
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 2281 2178 88.82 72.57 0.11 0.20
2 Σ 477 456 148.37 17.73 0.72 0.84
3 Π 144 137 8.76 9.25 0.75 0.86
3 Π 144 137 8.76 9.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1523.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 1454.0 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 mPW1PW91/6-31G(2df,p)
B
0.16724

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.318
C2 0.000 0.000 -0.693
N3 0.000 0.000 -1.855

Atom - Atom Distances (Å)
  Al1 C2 N3
Al12.01113.1732
C22.01111.1622
N33.17321.1622

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 mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Al 0.186      
2 C 0.019      
3 N -0.204      


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 2.983 2.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.541 0.000 0.000
y 0.000 -21.541 0.000
z 0.000 0.000 -31.800
Traceless
 xyz
x 5.130 0.000 0.000
y 0.000 5.130 0.000
z 0.000 0.000 -10.259
Polar
3z2-r2-20.518
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 6.583 0.000 0.000
y 0.000 6.583 0.000
z 0.000 0.000 9.028


<r2> (average value of r2) Å2
<r2> 65.147
(<r2>)1/2 8.071