Syntheses and Structural Studies of 1:1 (M:L) Silver(I) and 1:2 Nickel(II) Complexes with Tripodal Amide Ligand

Abstract

Due to their central role in both coordination and organometallic chemistry as well as metalloenzyme, tripodal ligands have attracted the attention of researchers from various backgrounds. Parallel to this, amide-type ligands are of considerable importance in the extraction and separation of wide range of metal ions such as transition metal, lanthanide and actinide ions. In addition, the coordinating properties of the amide-group are also interest in the relation to the other oxygen donors such as alcoholic and ether oxygen donors. Tripodal amide ligands as the fusion of tripode and amide units enable the divergent conformational changes of their complexes to accommodate a variety of metal ions as guests. Taking this reason into account, our group and others have reported lead(II), Pr(III) and Nd(III) complexes of the tripodal amide ligands including L which is a versatile tetradentate ligand. As a part of our ongoing efforts, we employed L as the amidetype tripodal ligand and synthesized its silver(I) and nickel(II) complexes with different stoichiometries and coordination numbers.