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Issue 4, 2014
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Synthesis and structure of the azidogermyliumylidene azide complex [L(N3)Ge:]+N3 with covalently and ionically bonded azide ligands at germanium(II) [L = bis(N-heterocyclic carbene)]

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Abstract

Starting from the chlorogermyliumylidene chloride salt [L(Cl)Ge:]Cl (1) (L = 1,1′-methylene-3,3′-di-2,6-diisopropyl-phenylimidazole-2,2′-diylidene), the chloride ion can be easily substituted by BPh4 to yield [L(Cl)Ge:]BPh4 (3). Reaction of the latter with NaN3 furnishes [L(N3)Ge:]BPh4 (4). In contrast, the direct reaction of 1 with NaN3 affords exclusively the first azidogermyliumylidene azide salt [L(N3)Ge:]N3 (2). The latter represents the first isolable diazido Ge(II) complex with a covalently bonded azido ligand and a weakly coordinating azide anion as the counterion. All new compounds 2, 3, and 4 were fully characterized, including using X-ray diffraction analysis.

Graphical abstract: Synthesis and structure of the azidogermyliumylidene azide complex [L(N3)Ge:]+N3− with covalently and ionically bonded azide ligands at germanium(ii) [L = bis(N-heterocyclic carbene)]

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Publication details

The article was received on 24 Oct 2013, accepted on 31 Oct 2013 and first published on 01 Nov 2013


Article type: Communication
DOI: 10.1039/C3CC48166B
Citation: Chem. Commun., 2014,50, 418-420
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    Synthesis and structure of the azidogermyliumylidene azide complex [L(N3)Ge:]+N3 with covalently and ionically bonded azide ligands at germanium(II) [L = bis(N-heterocyclic carbene)]

    Y. Xiong, S. Yao and M. Driess, Chem. Commun., 2014, 50, 418
    DOI: 10.1039/C3CC48166B

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