Synthesis, electrochemical and photophysical properties of heterodinuclear Ru-Mn and Ru-Zn complexes bearing ambident Schiff base ligand.

{While ruthenium tris(diimine) complexes have been extensively studied, this is not the case with ruthenium bis(diimine)X2 complexes where X represents a pyridinyl-based ligand. The synthesis of a new complex ([2][PF6]2) bearing two ambident Schiff base ligands (HL) constituted by the assembly of phenol and pyridinyl moieties is reported. Thanks to the heteroditopic property of HL, compd. [2]2+ was used as an original metalloligand for the coordination of a redox-active (Mn(III)) and redox-inactive (Zn(II)) second metal cation affording three heterodinuclear complexes, namely, [(bpy)2RuL2Mn(acac)][PF6]2 ([3][PF6]2; acac = acetylacetonate), [(bpy)2RuL2Mn(OAc)][PF6]2 ([4][PF6]2


Soumis le 12 avril 2018