European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry
4 years ago

Synthesis and Coordination Chemistry of a Chelating P–Sn Ligand Based on Stanna-closo-dodecaborate

Synthesis and Coordination Chemistry of a Chelating P–Sn Ligand Based on Stanna-closo-dodecaborate
Fatima Diab, Lars Wesemann, Tobias Wütz
Substitution at a B–H unit of the heteroborate cluster stanna-closo-dodecaborate [SnB11H11]2– at the upper belt of the icosahedron by one of the triarylphosphine moieties of xantphos was carried out under the catalysis of palladium acetate. The resulting coupling product is a monoanion offering two coordination sites: a low-valent tin-cluster vertex and a triaryl phosphine moiety. The basicity and nucleophilicity of the anion were investigated in reactions with a strong acid or an alkylating agent. Transition-metal electrophiles like platinum halide PtCl2 or rhodium carbonyl [Rh(CO)2Cl]2 react with the bidentate ligand, with the formation of cis-coordination products. The heteroborate cluster [SnB11H11]2– was substituted at the upper belt of the icosahedron by one of the triarylphosphine moieties of xantphos under the catalysis of palladium acetate. Transition-metal electrophiles, like the platinum halide PtCl2 or the rhodium carbonyl [Rh(CO)2Cl]2, react with the bidentate ligand, with the formation of cis-coordination products.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201700471

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