Manganese(II) and Copper(I) Compounds Based on Two Derivatives of Imidazo[1,5-a]pyridine: Synthesis, Structures, Magnetic Properties, and Catalytic Activity?

The utilization of 2,6-bis(imidazo[1,5-a]pyridin-3-yl)pyridine (bipp) and 3-(pyridin-2-yl)imidazo[1, 5-a]pyridine (pip) in the compounds of manganese(II) and copper(I) ions is presented. Two complexes, [Mn(bipp)(SO4)(H2O)]n (1) and [Cu(pip)(2)]ClO4 (2), were prepared with different characteristics in structure. Compound 1 exhibits a one-dimensional chain topology, and 2 is a homoleptic Cu(I) complex. The dc magnetic susceptibility investigations reveal the antiferromagnetic (AF) Mn-II center dot center dot center dot Mn-II interactions in complex 1. The catalytic activity of compound 2 toward ketalization reactions was studied. Complex 2 exhibits high activity for the ketalization transformations of aliphatic ketones.

Automated summary

In this study, the utilization of bipp and pip molecules as ligands for manganese and copper ions was demonstrated. Two complexes with different structures, [Mn(bipp)(SO4)(H2O)]n (1) and [Cu(pip)(2)]ClO4 (2), were synthesized. Compound 1 showed a one-dimensional chain structure, while compound 2 exhibited a homoleptic Cu(I) complex. The research also revealed antiferromagnetic interactions in compound 1 and high catalytic activity for ketalization reactions in compound 2.