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摘要:
A series of mononuclear complexes named [(bpy)Pd(L)]NO3 (1 center dot NO3 center dot H2O), Rbpy)Pt(L)]NO3 (2 center dot NO3 center dot H2O), and Rphen)Pd(L)]NO3 (3 center dot NO3 center dot H2O) (where bpy=2,2'-bipyridine, phen=1,10-phenanthroline) have been self-assembled through a directed coordination approach that involves spontaneous deprotonation of the 1,3-diphenylpropane-1,3-dione (L) in aqueous solution driven by coordination effect. NO3- in these assemblies can be effectively replaced by PF6- in a solution of KPF6. All of these new mononuclear complexes have been fully characterized by H-1 NMR, C-13 NMR and ESI-MS analysis. X-ray diffraction analysis of 1 center dot PF6 center dot CH3CN clearly shows that a dimeric crystal structure is formed by the stacking interactions and weak intramolecular Pd ... Pd (0.322 4 nm) interactions. More importantly, all of these three assemblies can be employed as a new kind of high-efficiency catalysts for Suzuki-coupling reaction. CCDC: 1566337, 1 center dot PF6 center dot CH3CN.
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