title: Rational design of covalently bridged [Fe(III)₂M(II)O] clusters.
abstract: We are reporting the first supramolecular dimeric units of basic carboxylates. The neutral [Fe(III)₂M(II)O] motif for different 3d M metals is covalently bound through 2,2'-bipyrimidine. We have structurally characterized the hexanuclear clusters and the related trinuclear building blocks. Their magnetic properties have been fully analyzed and DFT calculations have been performed as a supplementary tool. All results evidence a weak antiferromagnetic interaction through the bpym bridge between isolated spin ground states (in some examples) arising from intra-Fe₂MO core exchange couplings.
authors.affiliation: Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany. albores@qi.fcen.uba.ar
authors.forename: Pablo
authors.initials: P
authors.lastname: Alborés
authors.forename: Eva
authors.initials: E
authors.lastname: Rentschler