Anionic bipyridyl complexes of lanthanides. Structure of [Yb(bipy)3][Li(THF)4] |
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| Authors: | M. N. Bochkarev B. I. Petrov I. L. Fedyushkin T. V. Petrovskaya V. I. Nevodchikov N. B. Patrikeeva L. N. Zakharov Yu. T. Strucchkov |
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| Affiliation: | 1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603600, Nizhnii Novgorod, Russian Federation
2. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation
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| Abstract: | Reactions of SmII, TbIII, TmII, YbII, and LuIII iodides with 2,2′-bipyridyllithium in THF afford [Li(THF)4][Ln(bipy) n ] complexes (n=3 or 4) containing trivalent lanthanides. X-ray structural analysis demonstrated that in the crystalline state, the Yb derivative has the ionic structure, [Li(THF)4]+[Yb(bipy)3]?. In THF solutions, the reversible ligand exchange between metal atoms occurs to yield neutral compounds [Ln(bipy) n?1(THF) x ] and [Li(bipy)(THF) y ]. A decrease in the temperature shifts the equilibrium to ionic pairs. |
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