title: Formation of a dimer of trinuclear helicates which encapsulates an array of six hydrogen-bonded anions.
abstract: The amine-containing ligand L, composed of two bidentate pyridyl-thiazole moieties linked by a 1,3-diaminophenylene unit, reacts with copper(II) ions to form a dinuclear double helicate [Cu2 L2 ](4+) . Reaction of [Cu2 L2 ](4+) with dihydrogen phosphate (0.5 equivalents) gives the unsaturated dinuclear double helicate [Cu2 L2 (OPO3 H2 )](3+) . [Cu2 L2 (OPO3 H2 )](3+) further reacts with another 0.5 equivalents of dihydrogen phosphate to give a trinuclear circular helicate which then self-assembles into a hexameric cluster [{Cu3 L3 (OPO3 H2 )3 }](26+) .
authors.affiliation: Department of Chemical and Biological Sciences, University of Huddersfield, Huddersfield HD1 3DH (UK).
authors.forename: Robert A
authors.initials: RA
authors.lastname: Faulkner
authors.forename: Lindsay P
authors.initials: LP
authors.lastname: Harding
authors.forename: Joshua
authors.initials: J
authors.lastname: Higginson
authors.forename: Craig R
authors.initials: CR
authors.lastname: Rice
authors.forename: Christopher
authors.initials: C
authors.lastname: Slater
keywords: X-ray diffraction; copper; cyclic helicate; helical structures; self-assembly