title: Novel tailormade Bi4MO4(PO4)2 structural type (M = Mg, Zn).
abstract: In the Bi(2)O(3)-MO-P(2)O(5) ternary system, the commonly observed sizable 1D ribbon-like units have been extended to their 2D infinite end member, leading to the novel tailormade Bi(4)MO(4)(PO(4))(2) compounds. It contains planar [Bi(2)O(2)](2+) derivatives, separated by two slabs of PO(4), which create channels hosting the M(2+) cations (M = Mg, Zn). For both compounds, supercell orderings occur comparatively to the predicted ideal crystal structure (V(Mg) = 2V(ideal) and V(Zn) = 8V(ideal)). In the Mg case a transition into the ideal lattice occurs above 450 °C. In spite of the conceptual assembly of 2D motifs, the final architecture is three-dimensional due to strong interbonds. Thus, our work gives new insights on the possibility for versatile organization of original secondary building units (SBUs) able to self-assemble into predicted structural edifices. Single-crystal and powder XRD versus temperature, high-temperature (31)P NMR, as well as transmission electron microscopy were used for structural characterization. Preliminary electric characterization is also reported.
authors.affiliation: Université Lille 1, Université Lille Nord France, ENSCL, CNRS, UCCS, UMR 8181, F-59652 Villeneuve d' Ascq, France.
authors.forename: Diana
authors.initials: D
authors.lastname: Endara
authors.forename: Marie
authors.initials: M
authors.lastname: Colmont
authors.forename: Marielle
authors.initials: M
authors.lastname: Huvé
authors.forename: Grégory
authors.initials: G
authors.lastname: Tricot
authors.forename: Laurent
authors.initials: L
authors.lastname: Carpentier
authors.forename: Olivier
authors.initials: O
authors.lastname: Mentré