Synthesis and Crystal Structure of a Copper(II)–Sodium(I) Coordination Polymer

Abstract

A new coordination polymer, {[Na2Cu(Ac)4(H2O)]·H2O} n (HAc = acetic acid), has been synthesized and structurally characterized by IR spectroscopy and X-ray crystallography. The compound crystallizes in the orthorhombic system, space group Pccn with a = 16.9076(17) A, b = 11.8375(12) A, c = 15.7567(16) A, V = 3153.6(6) A3. Four oxygen atoms from different Ac− groups coordinate to the copper atom in a square-planar arrangement. Each sodium ion is in a distorted octahedral environment, being coordinated by one aqua ligand and five acetate oxygen atoms from two adjacent [Cu(Ac)4] units. An alternating arrangement of metal ions and bridging acetate ligands results in the formation of two-dimensional sheets which are further linked into a three-dimensional network by the water molecules between the layers through rich hydrogen bonds. The title compound {[Na2Cu(Ac)4(H2O)]·H2O} n (HAc = acetic acid) was synthesized and structurally characterized by X-ray crystallography. Four oxygen atoms from different Ac– groups coordinate to the copper atom in a square-planar arrangement. Each sodium ion is in a distorted octahedral environment, being coordinated by one aqua ligand and five acetate oxygen atoms from two adjacent [Cu(Ac)4] units. An alternating arrangement of metal ions and bridging acetate ligands results in the formation of two-dimensional sheets which are further linked into a three-dimensional network by the water molecules between the layers through rich hydrogen bonds.