title: A structural hierarchy in the hydrogen-bonded adduct N,N'-dimethylpiperazine-tartaric acid-water (1/2/2): an N-component N-dimensional structure (N =3) with substructures having N = 1 and 2.
abstract: In the hydrated adduct N,N'-dimethylpiperazine-1,4-diium bis(3-carboxy-2,3-dihydroxypropanoate) dihydrate, [MeNH(CH2CH2)2NHMe]2+*2(C4H5O6)-*2H2O or C6H16N2(2+)*2C4H5O6-*2H2O, formed between racemic tartaric acid and N,N'-dimethylpiperazine (triclinic P-1, Z' = 0.5), the cations lie across centres of inversion. The anions alone form chains, and anions and water molecules together form sheets; the sheets are linked by the cations to form a pillared-layer framework. The supramolecular architecture thus takes the form of a family of N-dimensional N-component structures having N = 1, 2 or 3.
authors.affiliation: School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, Scotland.
authors.forename: Dorcas M M
authors.initials: DM
authors.lastname: Farrell
authors.forename: George
authors.initials: G
authors.lastname: Ferguson
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Lough
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell