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: MP2/TZVP

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 MP2/TZVP
 hartrees
Energy at 0K-334.589560
Energy at 298.15K 
HF Energy-334.271154
Nuclear repulsion energy57.572308
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 MP2/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 2057 1950 291.61 96.93 0.19 0.32
2 Σ 534 506 197.22 15.52 0.70 0.82
3 Π 64 61 2.37 9.79 0.75 0.86
3 Π 64 61 2.37 9.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1359.7 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 1288.9 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 MP2/TZVP
B
0.19177

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 0.000 0.000 1.220
N2 0.000 0.000 -0.671
C3 0.000 0.000 -1.860

Atom - Atom Distances (Å)
  Al1 N2 C3
Al11.89033.0793
N21.89031.1890
C33.07931.1890

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