Dimethylsulfoxide gold-thallium complexes. Effects of the metal-metal interactions in the luminescence |
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| Authors: | Eduardo J. Ferná ndez,Antonio Laguna,José M. Ló pez-de-Luzuriaga,M. Elena Olmos |
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| Affiliation: | a Departamento de Química, Universidad de la Rioja, Grupo de Síntesis Química de La Rioja, UA-CSIC, Complejo Científico Tecnológico, 26006 Logroño, Spain
b Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain |
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| Abstract: | The heteropolynuclear complexes [AuTl(C6X5)2]n (X = F, Cl) react with dimethylsulfoxide (DMSO) in different molar ratios leading to products of stoichiometry [Tl2{Au(C6F5)2}2{μ-DMSO}3]n (1), and [Tl2{Au(C6Cl5)2}2{μ-DMSO}2]n (2). These complexes have been structurally characterized and can be viewed as extended linear chains built with Tl-Au-Tl units in which the thallium atoms are bridged by the oxygen atoms of DMSO ligands. Additional [Au(C6X5)2]− fragments interact with one or two thallium centres, respectively, giving rise to two different types of metal-metal interactions in each molecule. Both of them show a strong luminescence in solid state and complex 2 also in solution. The thallium-thallium interaction in this complex is considered to be the responsible of its luminescence, which remains in solution. |
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| Keywords: | Gold Thallium Dimethylsulfoxide Luminescence Metal-metal interactions |
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