Binuclear complexes of nickel with the bridging o-CH2C6H4 ligand: synthesis and reactions. X-ray crystal structure of [cyclic] trans-(Me3P)2BrNi[C(O)C6H4CH2-o]NiBr(PMe3), a complex containing a bridging .mu.2-.eta.1:.eta.1-aroyl ligand | Publicación