New Сu(II) and Co(II) Complexes with 2-Benzoylpyridine: Syntheses and Crystal Structures

Abstract

Two new mononuclear complexes [Cu(Bzpy)₂(Cl)₂] (I) and [Cо(Bzpy)₂(H₂O)₂](BF₄)₂ (II) are synthesized by the reactions of 2-benzoylpyridine (Bzpy) with the copper(II) and cobalt(II) salts. It is found by X-ray diffraction analysis (CIF files CCDC nos. 1908081 (I) and 1908080 (II)) that complex I is molecular and complex II is of the ionic type. Two neutral bidentate-chelate N,O-ligands Bzpy are coordinated to the complexing atom in both complexes. The Cl^– anions supplement the coordination polyhedra to octahedra in complex I, and the water molecules supplement the coordination polyhedra to octahedra in complex II. The [BF₄]^– anions in complex II compensate the positive charge of the complex cations and are bound to them by intermolecular hydrogen bonds О–H···F along with electrostatic interactions.