Coordination chemistry of nitriles and cyanamide at electron-rich metal centres
DOI: 10.1016/S0020-1693(00)92359-4
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摘要: Abstract The reactions of various nitriles with dinitrogen or isocyanide complexes presenting an electron-rich d 6 transition metal site are described and shown to give the following compounds: nitrile [ReCl(NCR)(dppe) 2 ] (R=alkyl aryl; dppe=Ph PCH CH PPh ), [Re(NCR) (dppe) ][BF 4 [Re(N )(NCR)(dppe) ], derived from NCR trans -[ReCl(N )(dppe) ]; cyanamide compounds - [Re(CNR)(NCNH (which can undergo deprotonation corresponding hydrogen cyanamide, NCNH, complexes), reaction NCNH -[ReCl(CNR)(dppe) cyanoimido -[M(NCN) (MMo W), dehydrogenation -[M(N ) trimethylsilyl species -[ReCl(CNSiMe 3 cyanide (NCSiMe ]. neutral organonitrile protonation either at ligand metal, methyleneamido hydrido (ReCl(NCHR)(dppe) + [ReHCl(NCR)(dppe) , respectively; further nitri]es amines hydrocarbons coupling alkynes, although in very low yields, have been detected some Mo(0) phosphinic centres. Moreover, complex MeOH HBF affords -[ReCl(CNH)(dppe) -[ReCl(CNH simplest aminocarbyne ligands, respectively. electrochemical behaviour those is also outlined involve electroinduced for cyanamido complexes.
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