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Synthesis and Coordination Chemistry of a Chelating P–Sn Ligand Based on Stanna‐ closo ‐dodecaborate
Author(s) -
Wütz Tobias,
Diab Fatima,
Wesemann Lars
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700471
Subject(s) - chemistry , phosphine , denticity , medicinal chemistry , xantphos , ligand (biochemistry) , nucleophile , electrophile , moiety , coordination complex , palladium , substitution reaction , diphosphines , chelation , stereochemistry , catalysis , organic chemistry , crystal structure , metal , biochemistry , receptor
Substitution at a B–H unit of the heteroborate cluster stanna‐ closo ‐dodecaborate [SnB 11 H 11 ] 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 PtCl 2 or rhodium carbonyl [Rh(CO) 2 Cl] 2 react with the bidentate ligand, with the formation of cis ‐coordination products.