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Mononuclear η6-Arene Complexes of Lanthanides: One-Step Syntheses, Crystal Structures, and Arene Exchange

✍ Scribed by Mikhail Gorlov; Linda Lejla Hussami; Andreas Fischer; Lars Kloo

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
213 KB
Volume
2008
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

Gallium(III) halides react with cerium(III), ytterbium(III), or dysprosium(III) halides in the presence of alkylated benzenes yielding mononuclear complexes of the general formula [Ln(η^6^‐arene)(GaX~4~)~3~]. The X‐ray structures of [Ce(C~6~H~5~Me)(GaCl~4~)~3~] (1), [Ce(p‐C~6~H~4~Me~2~)(GaCl~4~)~3~]·0.5(p‐C~6~H~4~Me~2~) (2), [Yb(C~6~H~5~Me)(GaCl~4~)~3~] (3), [Yb(p‐C~6~H~4~Me~2~)(GaCl~4~)~3~]·0.5(p‐C~6~H~4~Me~2~) (4), and [Dy(C~6~H~5~Me)(GaBr~4~)~3~] (5) were determined. Arene ligands in the cerium–toluene compound 1 can be substituted by polycyclic aromatic hydrocarbons (PAHs); the compounds [Ce(naphthalene)(GaCl~4~)~3~] (6) and [Ce(pyrene)(GaCl~4~)~3~]·0.5(pyrene) (7) have been isolated and structurally characterized. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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