title: Octadecanuclear cluster or 1D polymer with [[ML](2)Nb(CN)(8)](n) motifs as a function of [ML] (M = Ni(II), n = 6; M = Mn(II), n = infinity; L = macrocycle).
abstract: A nanosized octadecaheteronuclear aggregate, [[NiL(2)](12)[Nb(CN)(8)](6)(H(2)O)(6)], and a 1-D coordination polymer, [[MnL(1)](2)[Nb(CN)(8)](H(2)O)]( infinity ), have been obtained by self-assembly between the octacyanometalate [Nb(CN)(8)](4)(-) and [ML](2+) complexes. The dimensionality of the supramolecular architectures was found to be controlled by the [ML] module for which the equatorial coordination sites are blocked by a macrocyclic ligand. The crystal structures and magnetic properties for both the compounds are described.
authors.affiliation: Institut de Chimie de la Matière Condensée de Bordeaux-CNRS, 87 Avenue Dr. Schweitzer, F-33608 PESSAC, France.
authors.forename: Rabindranath
authors.initials: R
authors.lastname: Pradhan
authors.forename: Cédric
authors.initials: C
authors.lastname: Desplanches
authors.forename: Philippe
authors.initials: P
authors.lastname: Guionneau
authors.forename: Jean-Pascal
authors.initials: JP
authors.lastname: Sutter