Formation of H-bonding networks in the solid state structure of a trinuclear cobalt(iii/ii/iii) complex with N2O2 donor Schiff base ligand and glutaric acid as bridging co-ligand: synthesis, structure and DFT study

Abstract

A trinuclear linear mixed-valence centrosymmetric cobalt(III)-cobalt(II)-cobalt(III) complex, [Co^II{(μ-L)(μ-Hglu)Co^III(OH₂)}₂](ClO₄)₂·6H₂O has been synthesized during tetradentate N₂O₂ donor ‘Schiff base’ ligand, H₂L {N,N′-bis(salicylidene)-1,3-diaminopropane} and glutaric acid (H₂glu) as anionic co-ligand. The complex has been characterized by spectroscopic measurements and its solid state structure has been determined by single crystal X-ray diffraction analysis. The supra-molecular assembly formed by the hydrogen bonding interactions in the solid state of the complex has been analysed using DFT calculations.