A new activation mode of aryl germanium(II) chlorides at electron-rich metal centers leads to compounds featuring metal–germanium triple bonds. Reaction of 1 with RGeCl affords the hydrido–germylidene complex 2, which rearranges thermally to give the germylidyne complex 3 (see scheme; Trip=C6H2-2,4,6-iPr3). In contrast, the reaction of [Mo(PMe3)6] with RGeCl yields directly the germylidyne complex trans-[Cl(PMe3)4MoGeR].
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Filippou et al. (2006) studied this question.
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