Issue 21, 2008

Synthesis, characterisation and reactivity of germanium(ii) amidinate and guanidinate complexes

Abstract

Reactions of lithium salts of the bulky guanidinate ligands, [ArNC(NR2)NAr] (NR2 = N(C6H11)2 (Giso) and cis-NC5H8Me2-2,6 (Pipiso); Ar = C6H3Pri2-2,6), with GeCl2·dioxane afforded the heteroleptic germylenes, [(Giso)GeCl] and [(Pipiso)GeCl], the former of which was structurally characterised. The further reactivity of these and the related complexes, [(Piso)GeCl] and [(Priso)GeCl] (Piso = [ArNC(But)NAr], Priso = [ArNC(NPri2)NAr]) has been investigated. Salt elimination reactions have yielded the new monomeric complexes, [(Piso)Ge(NPri2)] and [(Piso)GeFeCp(CO)2], whilst a ligand displacement reaction afforded the heterometallic species, [(Piso)Ge(Cl){W(CO)5}]. Chloride abstraction from [(Priso)GeCl] with GaCl3 has given the structurally characterised contact ion pair, [(Priso)Ge][GaCl4]. In addition, the inconclusive outcome of a number of attempts to reduce the germanium halide complexes are discussed.

Graphical abstract: Synthesis, characterisation and reactivity of germanium(ii) amidinate and guanidinate complexes

Supplementary files

Article information

Article type
Paper
Submitted
22 Jan 2008
Accepted
13 Mar 2008
First published
17 Apr 2008

Dalton Trans., 2008, 2871-2878

Synthesis, characterisation and reactivity of germanium(II) amidinate and guanidinate complexes

C. Jones, R. P. Rose and A. Stasch, Dalton Trans., 2008, 2871 DOI: 10.1039/B801168K

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