title: Structural anisotropy of cyanido-bridged {CoII9WV6} single-molecule magnets induced by bidentate ligands: towards the rational enhancement of an energy barrier.
abstract: Pentadecanuclear {CII9[W(V)(CN)8]6} clusters were combined with bidentate 2,2'-bipyridine N,N'-dioxide (2,2'-bpdo) ligands resulting in two distinct molecules, {Co9W6(2,2'-bpdo)7} (cluster A) and {Co9W6(2,2'-bpdo)6} (cluster B), capped by seven and six 2,2'-bpdo ligands, respectively. They crystallize within a single {Co9W6(2,2'-bpdo)7}·{Co9W6(2,2'-bpdo)6}·solvent (1) supramolecular network, and reveal single-molecule magnet behaviour with an enhanced energy barrier, a ΔE/kB of 30.0(8) K, which was tentatively ascribed to seven-capped axially deformed cluster A.
authors.affiliation: Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland. robert.podgajny@uj.edu.pl.
authors.forename: Szymon
authors.initials: S
authors.lastname: Chorazy
authors.forename: Michał
authors.initials: M
authors.lastname: Rams
authors.forename: Anna
authors.initials: A
authors.lastname: Hoczek
authors.forename: Bernard
authors.initials: B
authors.lastname: Czarnecki
authors.forename: Barbara
authors.initials: B
authors.lastname: Sieklucka
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Ohkoshi
authors.forename: Robert
authors.initials: R
authors.lastname: Podgajny