LONG, Jérôme; CHAMOREAU, Lise-Marie; MATHONIÈRE, Corine; MARVAUD, Valerie

doi:10.1021/ic801901j

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LONG, Jérôme
Laboratoire de Chimie Inorganique et Matériaux Moléculaires [CIM2]

CHAMOREAU, Lise-Marie
Laboratoire de Chimie Inorganique et Matériaux Moléculaires [CIM2]

MATHONIÈRE, Corine
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Inorganic Chemistry. 2009, vol. 48, n° 1, p. 22-24

American Chemical Society

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Taking into account the general interest in photoswitchable nanomagnets, we present an original synthetic route to well-defined photoswitchable heterotrimetallic complexes. Our strategy demonstrates the feasibility of using a “molybdenum−copper” switchable complex with terminal cyanide ligands as relevant synthons for the rational design and synthesis of heterotrimetallic photoswitchable molecular architectures. Starting from a pentanuclear compound based on an octacyanometalated precursor, [MoIV(CN)4(CNCuII(Me2en)2)4]4+, and a [NiII(cyclam)]2+ assembling building block, we succeeded in synthesizing a photoswitchable heterotrimetallic chain, denoted as {NiMo2Cu7}n. The compound has been characterized by single-crystal X-ray diffraction, UV−vis and IR spectroscopies, and powder magnetic and photomagnetic susceptibility measurements. Before irradiation, the compound behaves as a paramagnet with eight independent spin carriers (CuII d9, S = 1/2, and NiII d8, S = 1). After irradiation, a long-lived metastable state persists until relatively high temperature (120 K) and is thermally reversible.< Réduire

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Photoswitchable heterotrimetallic chain based on octocyanomolybdate, copper, and nickel : synthesis, characterization, and photomagnetic properties

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