Bimetallic complexes from amphoteric group 13/15 ligands: syntheses and X-ray crystal structures.

摘要: Bimetallic, pentel-bridged complexes of the type [(dmap)Me 2 -M-E(SiMe 3 ) -M'(CO) n ] (M = Al, Ga; E=P, As, Sb; M'=Cr, Fe, Ni; DMAP= 4-(dimethylamino)pyridine) are formed by reactions DMAP-coordinated monomeric Group 13/15 compounds M-E(SiMe with transition metal [(Me N)Cr-(CO) 5 ], [Fe (CO) 1 and [Ni(CO) 4 ]. For first time, this reaction offers a general pathway to containing 13 bridged pentel atom. Complexes prepared in way were characterized IR multinuclear NMR spectroscopy single-crystal X-ray structure analysis. Their electronic structural properties discussed detail. The ligands very weak π acceptors, which is likely be due electropositive metal, feature comparatively long pentel-transition bonds. In addition, synthesis characterization parent gallanes [(dmap)-Me Ga-E(SiMe (E P, As) reported.