Cyanide as a versatile Lewis base ligand at a dinitrogen-binding iron(II) centre: mono- and heteronuclear adducts
                                
                                    
                                        作者:Sı́lvia S.P.R Almeida、M.Fátima C Guedes da Silva、Lucjan B Jerzykiewicz、Piotr Sobota、Armando J.L Pombeiro                                    
                                    
                                        DOI:10.1016/s0020-1693(03)00249-4
                                    
                                    
                                        日期:2003.12
                                    
                                    The ligated cyanide in trans-[FeH(CN)(dppe)(2)] is activated towards aroylation, alkylation and addition of various transition metal Lewis acids, in particular [WCl4(PPh3)(2)], [ReOCl3(PPh3)(2)], [PdCl2(PPh3)(2)] and [PtCl(Ph)(PPh3)(2)], to give, in the former case, mononuclear isocyanide complexes and, in the latter case, heteronuclear adducts with bridging cyanide. Their syntheses and spectroscopic characterisation are presented, as well as results of the X-ray diffraction analyses of a trinuclear complex with the Fe-Cequivalent toN-W-Nequivalent toC-Fe} unit and of the parent cyano trans-[FeH(CN)(dppe)(2)] complex. The cyanide bridge allows the electronic communication between the metal centres as indicated by a cyclic voltammetric study. (C) 2003 Elsevier Science B.V. All rights reserved.