Inorganic Chemistry, Vol.54, No.9, 4189-4191, 2015
Synthesis, Structure, and Reactivity of Zwitterionic Divalent RareEarth Metal Silanides
The synthesis and structures of the first zwitterionic divalent rare-earth metal silanides of the formula [Si(SiMe2OMe)(3)-kappa(3)](2)M (M-3), where M = Eu, Yb, and Sm, are reported. M-3 compounds feature spirocyclic bicyclooctane structures in which the central rare-earth metal ions are being octahedrally coordinated by six methoxy groups. The reaction of Yb-3 with BPh3 and W(CO)(6) respectively generated the trinuclear zwitterions [Ph3BSi(SiMe2OMe)(3)-kappa(3)](2)Yb (Yb-4) and [(CO)(5)WSi(SiMe2OMe)(3)-kappa(3)](2)Yb (Yb-5) in good yield.