Synthesis and exploration of a 1H-germol-1-ide/pyridine bidentate ligand.

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The synthesis of an anionic [Ge,N]-bidentate ligand based on the combination of an amidopyridinato group with an anionic germolide ring is reported. The potential of the germolide part of this ligand to switch between η1-(via Ge) and η5-(via C4Ge) coordination modes makes this ligand an interesting synthetic target. Salt metathesis reactions of the potassium salt of this ligand with GeCl2 dioxane and SnCl2 allow the synthesis of bis-germolyl-substituted germylenes and stannylenes with the tetrel atoms in a distorted square pyramidal coordination environment.