Silver Dimer, Tetramer, Polymer, and Network Structures with the Stannylene Stanna-<i>closo</i>-dodecaborate

The reaction of the tin nucleophile stanna-closo-dodecaborate [SnB11H11]2− with silver electrophiles resulted in the formation of silver−tin complexes. Depending on the respective co-ligands, a dimer, a tetramer, a polymer, and a three-dimensional network structure were characterized. With bipyridine and phenanthroline, dimeric complexes exhibiting very short Ag−Ag interatomic distances were isolated. With t-BuNC and pyridine, tetranuclear clusters showing tetrahedral geometry were crystallized. From the reaction of the silver salt [Et4N]8[Ag4(SnB11H11)6] with the bridging ligand 1,4-diisocyanobenzene (DIB) a linear polymeric coordination compound was formed, and a three-dimensional network structure was the product from the reaction of 1,4-diisocyanobenzene with the silver salt [Me4N][Ag(SnB11H11)]. The coordination compounds were characterized by X-ray crystal structure analysis and elemental analysis. In the case of the three-dimensional network material {[Me4N]4[Ag4(SnB11H11)4(DIB)6/2]}n (12) a single crystal to single crystal solvent exchange was found.