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A family of calix[4]arene-supported [Mn(III)2Mn(II)2] clusters |
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| Authors: | Taylor Stephanie M Karotsis Georgios McIntosh Ruaraidh D Kennedy Stuart Teat Simon J Beavers Christine M Wernsdorfer Wolfgang Piligkos Stergios Dalgarno Scott J Brechin Euan K |
| Institution: | 1. EastCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3?JJ (UK), Fax: (+44)?131‐650‐6453;2. School of Engineering and Physical Sciences, Heriot‐Watt University, Riccarton, Edinburgh, EH14 4AS (UK), Fax: (+44)?131‐451‐3180;3. Advanced Light Source, Berkeley Laboratory, 1 Cyclotron Road, MS6R2100, Berkeley, CA 94720 (USA);4. Institut Néel, CNRS and Université J. Fourier, BP 166, 25 Avenue des Martyrs, 38042Grenoble, Cedex 9 (France);5. Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen (Denmark) |
| Abstract: | In the cone conformation calix4]arenes possess lower-rim polyphenolic pockets that are ideal for the complexation of various transition-metal centres. Reaction of these molecules with manganese salts in the presence of an appropriate base (and in some cases co-ligand) results in the formation of a family of calixarene-supported Mn(III)(2)Mn(II)(2)] clusters that behave as single-molecule magnets (SMMs). Variation in the alkyl groups present at the upper-rim of the cone allows for the expression of a degree of control over the self-assembly of these SMM building blocks, whilst retaining the general magnetic properties. The presence of various different ligands around the periphery of the magnetic core has some effect over the extended self-assembly of these SMMs. |
| Keywords: | calixarenes cluster compounds manganese self‐assembly supramolecular chemistry |
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