Reactivity of germanium(II) hydride with nitrous oxide, trimethylsilyl azide, ketones, and alkynes and the reaction of a methyl analogue with trimethylsilyl diazomethane

Anukul Jana; Herbert W. Roesky; Carola Schulzke

doi:10.1039/B914164B

Reactivity of germanium(II) hydride with nitrous oxide, trimethylsilyl azide, ketones, and alkynes and the reaction of a methyl analogue with trimethylsilyl diazomethane†

Anukul Jana,^a Herbert W. Roesky*^a and Carola Schulzke^b

* Corresponding authors

^a Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, Göttingen, Germany
E-mail: hroesky@gwdg.de
Fax: +49-551-393373

^b School of Chemistry, Trinity College Dublin, Dublin 2, Ireland

Abstract

The reactions of stable β-diketiminate germanium(II) hydride LGeH (1) [L = HC(CMeNAr)₂, Ar = 2,6-iPr₂C₆H₃] with nitrous oxide, trimethylsilyl azide, ketones, and alkynes are described. 1 reacts with nitrous oxide to yield the germanium(II) hydroxide LGeOH (2), and with trimethylsilyl azide affords in toluene at room temperature the germanium(II) azide LGeN₃ (3), and also the germanium(IV) diamide L′Ge(NHSiMe₃)₂ (L′ = CH{(C [double bond, length as m-dash] CH₂)(CMe)(2,6-iPr₂C₆H₃N)₂}) (4). Ketones (PhCOCF₃, 2-C₄H₃SCOCF₃) and 1 generated the germanium(II) alkoxides (5–6) in high yield. The activated terminal alkyne (HC [triple bond, length as m-dash] CCO₂Me) and disubstituted alkyne (EtO₂CCCCO₂Et) react with 1 to form the germanium(II) substituted alkenes (vinyl germylene) (7–8). Further reaction of the methylgermanium(II) compound LGeMe (9) with trimethylsilyl diazomethane resulted in the formation of germanium(IV) amide L′Ge(Me)NHN [double bond, length as m-dash] CHSiMe₃ (10). Compounds 2–8, and 10 were characterized by microanalysis and multi-nuclear NMR spectroscopy. Furthermore compounds 3–6, and 8 are confirmed by X-ray structural analysis.

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DOI: https://doi.org/10.1039/B914164B
Article type: Paper
Submitted: 15 Jul 2009
Accepted: 11 Sep 2009
First published: 05 Oct 2009

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Dalton Trans., 2010,39, 132-138

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Reactivity of germanium(II) hydride with nitrous oxide, trimethylsilyl azide, ketones, and alkynes and the reaction of a methyl analogue with trimethylsilyl diazomethane

A. Jana, H. W. Roesky and C. Schulzke, Dalton Trans., 2010, 39, 132 DOI: 10.1039/B914164B

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Dalton Transactions

Reactivity of germanium(II) hydride with nitrous oxide, trimethylsilyl azide, ketones, and alkynes and the reaction of a methyl analogue with trimethylsilyl diazomethane†

Abstract

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Reactivity of germanium(II) hydride with nitrous oxide, trimethylsilyl azide, ketones, and alkynes and the reaction of a methyl analogue with trimethylsilyl diazomethane

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