Synthesis,crystal structure and magnetic properties of a new cyanide-bridged mixed-valence copper(I)/copper(II) clathrate |
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| Affiliation: | 1. Coordination and Supramolecular Chemistry Laboratory, Institute of Physical Chemistry “Ilie Murgulescu”, Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania;2. Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain;3. Institut Laue Langevin, B.P. 156, 6 Rue J. Horowitz, 38000, Grenoble, France;4. Laboratorio de Rayos X y Materiales Moleculares, Departamento de Física Fundamental II, Facultad de Física de la Universidad de La Laguna, Avda. Astrofísico Francisco Sanchez s/n, 38204 La Laguna, Tenerife, Spain;5. Departament de Química Inorgánica/Instituto de Ciencia Molecular, Facultat de Química de la Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain |
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| Abstract: | A unique cyanide-bridge mixed-valence CuI/CuII clathrate of formula CuI2(CN)3]{CuII(tren)}2(μ-CN)](CF3SO3)2 tren = tris(2-aminoethyl)amine] containing cyanide-bridged {CuII(tren)}2(μ-CN)]3 + binuclear cations stacked between anionic honeycomb layered copper(I) cyanide networks, was synthesized and structurally characterized by single crystal X-ray diffraction. Variable-temperature magnetic susceptibility studies showed that the cyanide bridge mediates a strong antiferromagnetic interaction between the copper(II) centers (J = ? 160 cm? 1, the spin Hamiltonian being defined as H = ?J SA?SB). |
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