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Quadruple Deprotonation of 2-Aminophenylphosphane with a p-Block-Metal/Alkali-Metal Base


  • We thank the EPSRC (S.M.H., C.M.P., M.M., J.M.R., and D.S.W); St. Catharine's College, Cambridge (fellowship for A.D.W.); The Cambridge European Trust and Newton Trust (F.G.); the States of Guernsey; and The Domestic and Millennium Fund (R.A.K.) for financial support. Acknowledgement is made to the donors of the American Chemical Society Petroleum Research Fund for partial support of this research (M.L.S.). We also thank Dr. J. E. Davies (Cambridge) for collecting X-ray data for compound 1.


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An unusual, paramagnetic SnII-centered cage [{[Sn(L)(NMe2)Li(thf)][Sn(L)Li(thf)3]Sn}2] (see crystal structure) is generated by the treatment of 2-aminophenylphosphane (1-PH2-2-NH2C6H4) with nBuLi and [Sn(NMe2)2]. Remarkable quadruple deprotonation of the ligand results upon use of this mixed system consisting of an alkali-metal base and a p-block dimethylamide.