Mechanochemical reactivity of square-planar nickel complexes and pyridyl-based spacers for the solid-state preparation of coordination polymers: the case of nickel diethyldithiophosphate and 4,4′-bipyridine

Abstract

The mechanochemical synthesis of a coordination polymer from a preformed metal coordination complex and a pyridyl-based spacer has been successfully performed. The coordination polymer (1·L)∞ was obtained rapidly from the reaction of the neutral square-planar complex [{(EtO)2PS2}2Ni] (1) and 4,4′-bipyridine (L) at room temperature through two different mechanochemical approaches (neat grinding and liquid-assisted grinding). The products were characterized by X-ray powder diffraction, IR spectroscopy, scanning electron microscopy, thermogravimetry and differential scanning calorimetry techniques. In parallel (1·L)∞ was prepared by conventional solvent-based methods, and the X-ray crystal structure of the polymer, obtained as single crystals, was compared with that from the mechanochemical preparation.

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ORCID for Simon J. Coles: orcid.org/0000-0001-8414-9272

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