High nuclearity manganese(III) compounds containing phenol-pyrazole ligands: the influence of the ligand on the core geometry |
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| Authors: | Viciano-Chumillas Marta de Ruiter Graham Tanase Stefania Smits Jan M M de Gelder René Mutikainen Ilpo Turpeinen Urho de Jongh L Jos Reedijk Jan |
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| Institution: | Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, P. O. Box 9502, 2300, RA, Leiden, The Netherlands. |
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| Abstract: | Three high-nuclearity manganese(III) clusters have been synthesized and characterized: Mn?(μ?-O)?(phpzH)?(thf)?] (1), Mn?(μ?-O)?(phpzH)?(EtOH)?]·2EtOH (2), and Mn?(μ?-O)?(μ?-Br)?(HphpzEt)?(phpzEt)] (3). Compounds 1 and 2 contain a Mn?(μ?-O?)(phpzH)?] core in which antiferromagnetic interactions between the manganese(III) ions are found. Compound 3 is a hexanuclear manganese(III) cluster in which weak ferromagnetic interactions appear to be operative. The formation and the stability of the cluster cores in relation to the type of phenol-pyrazole ligand and the reaction conditions are discussed. |
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