Issue 11, 2019

Dinuclear organogermanium chalcogenide complexes as intermediates towards functionalized clusters

Abstract

Reactions of R1GeCl3 (R1 = CMe2CH2COMe) with (Me3Si)2E (E = S, Se, Te) yield three new organogermanium chalcogenide complexes [(R1GeCl)2S2] (1), [(R1GeCl)2Se2] (2), and [(R1GeCl)2Te2] (3) with functionalized ligands R1 = CMe2CH2COMe. NMR titration experiments clearly demonstrate that these dimeric complexes are intermediates in the formation of the well-known sesquichalcogenide clusters [(R1Ge)4E6]. In striking contrast to related tin compounds that were recently reported, the mono-bridged complexes of the type “[(R1GeCl2)2E]” and defect-heterocubane-type clusters “[(R1Ge)3E4Cl]” do not form on the NMR time scale for E = S or Te, and only in traces for E = Se.

Graphical abstract: Dinuclear organogermanium chalcogenide complexes as intermediates towards functionalized clusters

Supplementary files

Article information

Article type
Paper
Submitted
22 ene. 2019
Accepted
15 feb. 2019
First published
21 feb. 2019

Dalton Trans., 2019,48, 3671-3675

Dinuclear organogermanium chalcogenide complexes as intermediates towards functionalized clusters

E. Dornsiepen and S. Dehnen, Dalton Trans., 2019, 48, 3671 DOI: 10.1039/C9DT00310J

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