Acta Cryst. (2001). E57, m363-m364  [ doi:10.1107/S1600536801011254 ]

trans-Diiodopentakis(tetrahydrofuran)ytterbium(III) tetraiodo-trans-bis(tetrahydrofuran)ytterbium(III)

M. Niemeyer

Abstract: The ionic title complex, [YbI₂(thf)₅][YbI₄(thf)₂], was obtained by oxidation of the arylytterbium(II) iodide DppYbI(thf)₃ (Dpp = 2,6-Ph₂C₆H₃) with neopentyl iodide. In the pentagonal-bipyramidal coordinated cation [Yb-I = 2.9366 (9) Å and Yb-O = 2.340 (6), 2.347 (8) and 2.365 (6) Å], a twofold rotation axis passes through the Yb atom, the O atom and the midpoint of the C-C bond of one of the thf ligands. The centrosymmetric anion shows an almost regular coordination octahedron [Yb-I = 2.9641 (8) and 2.9856 (9) Å, and Yb-O 2.279 (6) Å].

Online 20 July 2001

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