Complexes of rhodium(III) and iridium(III) with the mono-oximes of 1,2-naphthoquinone: X-ray crystal structure of pyridinium trichloro(1,2-naphthoquinone 1-oximato)(pyridine)iridate(III) |
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| Affiliation: | 1. Department of Earth and Marine Sciences, University of Palermo, Via Archirafi, 36, 90123 Palermo, Italy;2. Université Pierre et Marie Curie, Paris 6 Institut des Sciences de la Terre 4, place Jussieu, F75005 Paris, France;3. SIDERCEM S.R.L., Via L. Grassi, 7, 93100 Caltanissetta, Italy;4. Italkali S.P.A., Miniera di Realmonte, Via Scavuzzo, Realmonte (AG), Italy;5. Politecnico di Bari, DICATECH Department, Via E. Orabona 4, 80100 Bari, Italy |
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| Abstract: | The complexes M(1-nqo)3 (M = Rh or Ir, 1-nqoH = 1,2-naphthoquinone 1-oxime) and M(2-nqo)3 (M = Rh or Ir, 2-nqoH = 1,2-naphthoquinone 2-oxime) were prepared by the interaction of the quinone oxime with hydrated rhodium(III) chloride or chloroiridic(III) acid. The mixture resulting from the reaction of chloroiridic(III) acid and 1,2-naphthoquinone 1-oxime on treatment with pyridine afforded [pyH][Ir(1-nqo) (py)Cl3] which was characterized by X-ray crystallography. The complexes Rh(1-nqo)3 and Rh(2-nqo)3 were also obtained by the nitrosation of the respective naphthol in the presence of hydrated rhodium(III) chloride. None of the trischelates showed any tendency to react with pyridine, triphenylphosphine or aqueous hydrochloric acid. |
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