SYNTHESE DE COMPOSES A LIAISON MIVB-MERCURE. PRECURSEURS D'ESPECES MONOVALENTES (GERMYNES), ET BIVALENTES (GERMYLENES), DE RADICAUX CENTROMETALLES ET D'INTERMEDIAIRES

Article abstract of DOI:10.1016/S0022-328X(00)85661-2

Polynuclear germyl-mercury compounds are obtained from the reaction of organohydrogermanes PhnGeH4-n or digermanes Ph2nGe2H4-n (n = 1, 2) with dialkylmercury R2Hg.Di- or tri-mercurated geminal polygermates thus synthesized generally present a low stability and undergo thermal- or photodecompositions leading to the corresponding monovalent (germynes), divalent (germylenes) or, trivalent (germanium centered radicals) species and also to intermediate biradicals which could be considered as limit forms of germanium doubly-bonded compounds .Such intermediates have been chemically and spectroscopically characterized.Extension of these reactions to the silicon analogs met with difficulties, and thus previously observed differences between silicon and germanium chemistry were confirmed.