Volume 39, Issue 20 pp. 3688-3691
Communication

Spin Frustration in a Dimeric MnII Complex with a Metallocene-Substituted α-Nitronyl Nitroxide Radical

Daniel Ruiz-Molina Dr.

Daniel Ruiz-Molina Dr.

Institut de Ciencia de Materials de Barcelona (CSIC) Campus Universitari de Bellaterra 08193, Cerdanyola (Spain) Fax: (34) 93-580-5729

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Christian Sporer

Christian Sporer

Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck Innrain 52a, 6020 Innsbruck (Austria) Fax: (43) 512-507-2934

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Klaus Wurst

Klaus Wurst

Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck Innrain 52a, 6020 Innsbruck (Austria) Fax: (43) 512-507-2934

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Peter Jaitner Prof.

Peter Jaitner Prof.

Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck Innrain 52a, 6020 Innsbruck (Austria) Fax: (43) 512-507-2934

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Jaume Veciana Prof.

Jaume Veciana Prof.

Institut de Ciencia de Materials de Barcelona (CSIC) Campus Universitari de Bellaterra 08193, Cerdanyola (Spain) Fax: (34) 93-580-5729

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This work was supported by grants from DGES (project PB96-0802-C02-01), CIRIT (project SGR 96-00106), Fonds zur Förderung der Wissenschaftlichen Forschung, Vienna (Project P 13128), Austrian Federal Ministry of Science (BMWV), Acción Integrada Hispano-Austríaca (HU-1999-0015), and the 3MD Network of the TMR program of the E.U. (contract ERBFMRX CT980181). C.S. thanks the Austrian Federal Ministry of Science for the award of a research scholarship. D.R.-M. thanks the Generalitat de Catalunya for a postdoctoral grant. The authors acknowledge the suggestions given by one of the referees.

Abstract

A butterfly structure and competing magnetic exchange interactions between the manganese(II) ions and organic, ruthenocene-substituted α-nitronyl nitroxide (NIT) radicals characterize the spin frustration system of a new dimeric MnII complex (see scheme, IMH=reduced form of the imino nitroxide).

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