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Phosphine-Stabilized Digermavinylidene

Phosphine-Stabilized Digermavinylidene

Kilian M Krebs, Dominik Hanselmann, Hartmut Schubert, Kai Wurst, Marcus Scheele, Lars Wesemann

J Am Chem Soc. 2019 Feb 27;141(8):3424-3429.

PMID: 30735366

Abstract:

An intramolecular germylene-phosphine Lewis pair (1) was reacted with germanium dichloride to give in 92% yield a phosphine adduct of a chloro substituted germyl-germylene (2). After reduction of this dichloride with strong reductants like the Mg(I) reagent {(MesNacnac)Mg}2 (72% yield) or Na (52% yield) a phosphine stabilized digermavinylidene (3) was isolated as crystalline material [MesNacnac = {[(Mes)NC(Me)]2CH}-, Mes = 2,4,6-Me3C6H2]. The electronic structure of the digermavinylidene was investigated by density functional theory calculations. In reaction with adamantylphosphaalkyne the product of a [2+2] cycloaddition was characterized (4). Adamantylazide abstracts at room temperature a germanium atom from the digermavinylidene and a tetrameric organogermanium nitride (5) was isolated as colorless crystals.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1613667	Diphenylgermanium dichloride		1613-66-7	Price

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