Journal
POLYHEDRON
Volume 20, Issue 11-14, Pages 1677-1685Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0277-5387(01)00672-6
Keywords
layered magnets; electron ligands; long range magnetic ordering; copper(II)/cobalt(II) dicarboxylate
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We discuss the structure and magnetic properties of multilayer compounds M(2)(OH)(2)A . zH(2)O, where M = Co(II) or Cu(II) and A is a dicarboxylate anion. They consist of metal hydroxide-based layers connected through difunctional species (A), which, depending on their nature (alkane-, alkene-dioate or terephthalate) act as pillars or electronic connectors. Either metamagnetism or ferromagnetism is observed, with a huge coercive field of 5.9 T at 4 K in the case of the cobalt(II) hydroxyterephthalate. The aim is to show that re electron species connecting ferromagnetic layers may induce unexpected magnetic properties. High-frequency EPR experiments (95 GHz) and magnetic measurements are reported, giving information on the local structure and the exchange couplings. (C) 2001 Elsevier Science Ltd. All rights reserved.
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