Poly (Isonicotinic Acid N-Oxide–Isonicotinate-N-Oxide-Chloro-Uranyl): The Interpenetrating Grids Created by Coordination and Hydrogen Bonds

Abstract

The building blocks of the title compound, [UO2 2+·Cl−·(C6H4NO3)− · (C6H5NO3)]n–uranyl fragment, chloride ion, one deprotonated isonicotinate N-oxide and one isonicotinic acid N-oxide, are arranged in the complicated three dimensional network by means of both coordination and hydrogen bonds. The uranium ion is seven-coordinated, in the fashion intermediate between the pentagonal bipyramid and capped octahedron. The coordination one-dimensional polymer chains are connected by strong carboxyl—carboxyl hydrogen bonds into two dimensional grids. These grids interpenetrate each other like the chain-links. The coordination one-dimensional polymer chains are connected by strong carboxyl—carboxyl hydrogen bonds into two dimensional grids, which interpenetrate each other like the chain-links.