title: A Mn(III)2Ni(II) single-chain magnet separated by a thick isolating network of BPh4- anions.
abstract: The assembly reaction of a Mn(III) salen-type dimeric complex, [MnIII2(saltmen)2(H2O)2](ClO4)2 (saltmen2- = N,N'-(1,1,2,2-tetramethylethylene)bis(salycylideneiminate)), and a Ni(II) oximato complex, [Ni(II)(pao)2(phen)] (pao- = pyridine-2-aldoximate; phen = 1,10-phenanthroline), in the presence of NaBPh4 yielded a heterometallic chain of [MnIII2(saltmen)2NiI)(pao)2(phen)](BPh4)2 (Mn2Ni-BPh4) having a [-Mn(III)-ON-Ni(II)-NO-Mn(III)-(OPh)2-] repeating unit surrounded by a "zeolite-like" network of BPh4- anions. Thanks to such bulky ion-walls, each chain is not only structurally separated with a nearest inter-chain metalmetal distance of 14.4 A (MnNi) but also magnetically extremely well isolated. This magnetic isolation and the ferromagnetic interactions between S = 3 anisotropic units constituting the chain play key roles that induce single-chain magnet behavior in this system.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan. miyasaka@agnus.chem.tohoku.ac.jp
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Miyasaka
authors.forename: Ayumi
authors.initials: A
authors.lastname: Saitoh
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamashita
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Clérac