Disilylated germylenes and stannylenes are reactive intermediates formed by reactions of oligosilanyl anions with halogermylenes and halostannylenes, such as GeCl2�dioxane and SnCl2, respectively. Addition of a suitable Lewis base results in stabilization of the electron-deficient center, which enables isolation, characterization and further reactivity studies of germylene and stannylene compounds.1 Previous studies demonstrated that reactions of phosphine adducts of disilylated stannylenes and germylenes with Pt(0) and Pd(0) led to the formation of silastannene and silagermene complexes.2,3Reaction of phosphine adducts of cyclic disilylated stannylenes and germylenes with group 11 cyanides caused the formation of light-sensitive gold, silver and copper complexes.3 In contrast to these results, reactions of N-heterocyclic carbene adducts of bis[tris(trimethylsilyl)silyl]stannylene and -germylene with AuCN resulted in migration of a tris(trimethylsilyl)silyl group to the gold atom.References:(1) Hlina, J.; Baumgartner, J.; Marschner, C.; Albers, L.; M�ller, T. Organometallics 2013  , 32, 3404�3410.(2) Arp, H.; Marschner, C.; Baumgartner, J.; Zark, P.; M�ller, T. J. Am. Chem. Soc. 2013  , 135, 7949�7959.(3) Hlina, J. PhD thesis, Technische Universit�t Graz: Graz, 2013.

Coordination chemistry of disilylated germylenes and stannylenes with Group 11 metals

248th National Meeting (2014)

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