Synthesis and Structural Characterization of a Metal Cluster and a Coordination Polymer Based on the [Mn(6)(mu(4)-O)(2)] Unit.

Bioinorganic Chemistry and Applications
Eleni E MoushiManolis J Manos

Abstract

A new 1-D coordination polymer {[Mn(6)O(2)(O(2)CMe)(10)(H(2)O)(4)].2.5H(2)O}(infinity) (1.2.5H(2)O)(infinity) and the cluster [Mn(6)O(2)(O(2)(O(2)CPh)(10) (py)(2)(MeCN)(H(2)O)].2MeCN (2.2MeCN) are reported. Both compounds were synthesized by room temperature reactions of [Mn(3)(mu(3)-O)(O(2)CR)(6)(L)(2)(L')] (R = Me, L = L' = py, (1.2.5H(2)O)(infinity); R = Ph, L = py, L' = H(2)O, 2.2MeCN) in the presence of 3-hydroxymethylpyridine (3hmpH) in acetonitrile. The structures of these complexes are based on hexanuclear mixed-valent manganese carboxylate clusters containing the [Mn(4) (II)Mn(2) (III)(mu(4)-O)(2)](10+) structural core. (1.2.5H(2)O)(infinity) consists of zigzag chain polymers constructed from [Mn(6)O(2)(O(2)CMe)(10)(H(2)O)(4)] repeating units linked through acetate ligands, whereas 2.2MeCN comprises a discrete Mn(6)-benzoate cluster.

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