Design and Synthesis of Multidentate Dinucleating Ligands Based on 1,8-Naphthyridine

Several novel multidentate dinucleating ligands based on 1,8-naphthyridine have been synthesized in which the 1,8-naphthyridine moiety serves as a bridging unit. These ligands can link two metal ions like the syn, syn coordination mode of bridging carboxylate groups encountered in a variety of dimetallic centers in biology. Stable dimetallic complexes with variable metal–metal separations and geometries readily form with the use of these ligands.