Affiliation:
1. Universidade Federal de Santa Maria. Departamento de Quimica, 97119 - 970 Santa Maria - RS, Brasilien
2. Institut für Anorganische und Analytische Chemie der Justus-Liebig-Universität Gießen. D-35329 Gießen
3. Institut für Anorganische Chemie der Eberhard-Karls-Universität Tübingen. D-72076 Tübingen
Abstract
Ag4[(PhN3)2C6H4]2(en)2 is obtained by the reaction of [Ag(NH3)2]+ with 1,2-bis- (phenyltriazeno)benzene and ethylenediamine. It crystallizes in the monoclinic space group P21/c with a = 1064.9(2), b = 2041.8(3), c = 1008.5(3) pm, β = 101.37(2)°, Z = 2. In the centrosymmetrical tetranuclear complex, the four Ag+ ions form a zigzag chain with Ag-Ag distances of 293.34 and 280.42 pm. Ethylenediamine molecules chelate the two terminal Ag atoms of this chain. Each of the 1,2-bis(phenyltriazeno)benzene ligands in the deprotonated bis(triazenido) form [(PhN3)2C6H4]2- is bridging three Ag+ ions. The Ag+ ions are coordinated by three N atoms in a trigonal planar arrangement with Ag-N distances between 214.0 and 241.2 pm.
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10 articles.
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