L-alanine Derived Schiff Base Ligated Vanadium(IV) Complex with Phenanthroline as Co-ligand: Synthesis, Crystal Structure and Hirshfeld Surface Analysis

Abstract

A vanadium(IV) Schiff base complex derived from salicylaldehyde and L-alanine with phenanthroline as co-ligand viz. [V IV O(salala)(phen)].0.5H 2 O.CH 3 OH (where salala = Schiff base derived from salicylaldehyde and L-alanine, phen = 1,10-phenanthroline) was synthesized and its structure determined by single crystal X-ray diffraction. The crystal lattice parameters of the complex was determined by single crystal X-ray diffraction with lattice parameters, a = 18.4361(5) Å, b = 22.4926(6) Å, c = 12.4035(6) Å, β = 126.904(1) °, C2 space group, Z = 2. In the crystal, the V(IV) ions are in distorted octahedral geometry by coordinating to two oxygen atoms and one nitrogen atom of Schiff base ligand and two phenanthroline nitrogen atoms. The π•••π stacking interactions as well as C-H•••O hydrogen bonds were found to play an important role in the self-assembly of the complex molecules. The non-covalent interactions of the complex were further evaluated by Hirsh eld Surface Analysis. Spectroscopic characterization of the complex by Infrared and UV-visible spectroscopic techniques is also reported.