New Germanium Complexes Containing Ligands Based on 4,6-Di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzoquinone in Different Redox States
✍ Scribed by Alexandr V. Piskunov; Igor A. Aivaz'yan; Andrey I. Poddel'sky; Georgii K. Fukin; Evgenii V. Baranov; Vladimir K. Cherkasov; Gleb A. Abakumov
- Book ID
- 102826485
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 572 KB
- Volume
- 2008
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
The exchange reaction of lithium o‐amidophenolate, (AP)Li~2~, derived from the reaction of 4,6‐di‐tert‐butyl‐N‐(2,6‐diisopropylphenyl)‐o‐iminobenzoquinone (imQ) with GeCl~4~ in hexane or thf leads to (AP)~2~Ge (1) (AP is a dianion of imQ). The latter was also obtained by the interaction of GeCl~2~·dioxane and (ISQ)Li in toluene (ISQ is a radical anion of imQ). The reaction of (AP)Li~2~ with GeCl~2~·dioxane in thf results in the formation of germylene 2, [(AP)Ge (2)], which reduces neutral imQ to give compound 1. The exposure of 1 in thf to anhydrous HCl in a 1:1 molar ratio leads to its o‐aminophenolato derivative, (AP)(APH)GeCl (3). Free imQ inserts into the Ge–H bond of (C~6~F~5~)~3~GeH in thf to give (C~6~F~5~)~3~Ge(APH) (4). It is another way of obtaining complexes with protonated ligands such as APH. Compound 3 can be easily oxidized by air to form the stable paramagnetic complex (AP)(ISQ)GeCl (5). Complexes 1 and 3–5 were structurally investigated by using single‐crystal X‐ray diffraction.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)