Synthesis and characterization of triazole-functionalized mixed-valent Si(I)–Si(III) and bis(germylene) compounds

The synthesis of mixed-valent main-group compounds is a challenging goal that has attracted significant interest recently. The reaction of 1-(2-bromophenyl)-4-phenyl-1H-1,2,3-triazole with nBuLi, followed by treatment with [(PhC(tBuN)2SiCl)], yielded a rare Si(I)-Si(III) compound (1), whereas treatment with [(PhC(tBuN)2GeCl)] produced a bis(germylene) compound (2).