Approaches to molecular magnetic materials from the use of cyanate groups in higher oxidation state metal cluster chemistry: Mn14 and Mn 16

Abstract

The initial employment of cyanato groups in higher oxidation state manganese cluster chemistry, in conjunction with the gem-diolate form of di-2-pyridylketone or 2,6-diacetylpyridine dioxime chelate ligands, has afforded structurally interesting MnII/III14 and Mn II/III/IV16 clusters, respectively. In both complexes, the end-on bridging cyanato groups show an obvious preference in binding through their O atom, a significantly different ligation than that for the homoatomic-type N3- ligand. The Mn14 compound shows entirely visible out-of-phase signals below 5 K and large hysteresis loops below 2 K. The use of cyanato groups in higher oxidation state Mn cluster chemistry, in combination with the gem-diolate form of di-2-pyridylketone or 2,6-diacetylpyridine dioxime chelate ligands, has afforded structurally new Mn14 and Mn16 clusters, respectively

the Mn14 compound shows entirely visible out-of-phase signals below 5 K and large hysteresis loops below 2 K. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.