Abstract
AbstractThe coordination chemistry of a group of hydrazone‐based ligands, modified with carboxylate and heterocyclic terminal donor groups, with MnII and CoII has been investigated. The multifunctional nature of the ligands allows coordinative flexibility based on the hydrazone core, which is well established to lead to spin‐coupled polymetallic assemblies through μ‐Ohydrazone bridging. Examples of dinuclear, tetranuclear and chain complexes are reported with hydrazone, carboxylate and triazole bridging. Spin exchange through the μ‐O and μ‐N,N bridging connections leads to antiferromagnetic exchange in most cases, except for the central subunit in the MnII4 chain complex, where small (< 90°) bridge angles result in contributing ferromagnetic interactions.
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