title: Piperazinediium tetra-chloridozincate(II).
abstract: In the title compound, (C(4)H(12)N(2))[ZnCl(4)], the Zn atom adopts a slightly distorted tetra-hedral geometry. In the crystal, the dication and dianion inter-act by way of N-H⋯Cl and N-H⋯(Cl,Cl) hydrogen bonds to result in a layered network propagating in (010). The hydrogen-bonding network is unbalanced, with three Cl atoms accepting two hydrogen bonds each and one Cl atom not accepting any hydrogen bonds: the latter shows the shortest Zn-Cl bond length. The crystal studied was found to be an inversion twin.
authors.affiliation: Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.
authors.forename: Pamela A
authors.initials: PA
authors.lastname: Sutherland
authors.forename: William T A
authors.initials: WT
authors.lastname: Harrison