| A doughnut-like (Mn(III))12 metallocycle formed by a rigid angular bis-catecholate with a nanometer-sized central hole. | |
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MedLine Citation:
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PMID: 20524688 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Reaction of the rigid angular ligand tetrahydroxy-9,10-dimethyl-9,10-dihydro-9,10-ethanoanthracene, hereafter LH(4), with Mn(CH(3)CO(2))(2) x 2 H(2)O in a basic aqueous medium, in air, affords a crystalline product of composition Na(12){[Mn(H(2)O)](12)L(12)} x xH(2)O. Single-crystal X-ray diffraction reveals the presence of large [Mn(III)(12)L(12)](12-) metallocycles of roughly hexagonal appearance, somewhat resembling a doughnut in which the central hole (van der Waals surface to surface) is roughly a nanometer across. This is the first example of a metal derivative of the fully deprotonated form, L(4-). Associations with aquated Na(+) counterions lead to a pleasingly symmetrical packing arrangement resembling honeycomb, with the central holes of individual metallocycles lined up one above the other. The ligand L(4-), on account of its rigid angularity and its strong metal binding properties, promises to provide a rich source of unusual metal-containing structures, in particular cages, in future studies. |
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Authors:
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Brendan F Abrahams; Nicholas J FitzGerald; Richard Robson |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Inorganic chemistry Volume: 49 ISSN: 1520-510X ISO Abbreviation: Inorg Chem Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-06-28 Completed Date: 2010-10-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0366543 Medline TA: Inorg Chem Country: United States |
Other Details:
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Languages: eng Pagination: 5953-6 Citation Subset: - |
Affiliation:
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School of Chemistry, University of Melbourne, Victoria 3010, Australia. bfa@unimelb.edu.au |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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