Designing new pincer ligands and their transition metal complexes

Abstract

Synthesis and characterization of pincer ligands containing NHCs and CAACs ligand precursors and metalation of the NHCs ligand precursor with the metal precursor [Ru(CNMe)Cl3(OH2)] and formed the metal complex1 [Ru(CNCH,Me)(CNMe)I]PF6(1). The metalation of CAACs ligand precursor has not completed yet. Another metal complex with 4d transition metal, Yttrium, with redox active pincer ligand has been formed with the help of previously reported ligand precursor (NNN) pincer ligand in our research group. This ferrocenyl substituted pyrazole containing (NNN) ligand precursor was treated with the yttrium metal precursor [Y(III)(CH3COO)3∙4H2O] to give the metal complex [Y(III)(NNN)(CH3COO)2] (2). All the synthesized ligands and metal complexes have been characterized by mass spectrometry and multinuclear NMR spectroscopic techniques.