Crown compounds for anions. Unusual complex of trimetric perfluoro-o-phenylenemercury with the bromide anion having a polydecker sandwich structure |
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| Institution: | 1. Department of Materials Science and Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran;2. School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran;3. School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea |
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| Abstract: | Here we show that cyclic trimetric perfluoro-o-phenylenemercury (o-C6F4Hg)3 is capable of forming complexes with PPh4]+Br?, PPh3Me]+I? and PPh4]+Cl? of the composition (o-C6F4Hg)3X]? PR3R′]+ (X = Br, R = R′ = Ph; X = I, R = Ph, R′ = Me) or {(o-C6F4Hg)3X2}2?PR3R′]+2 (X = Cl, R = R′ = Ph). An X-ray study of the complex with PPh4]+Br? revealed that it has the unusual structure of the polydecker bent sandwich wherein each Br? anion is coordinated with six mercury atoms of two neighbouring molecules of (o-C6F4Hg)3. |
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