Investigation of Structural and Magnetic Properties of First and Second Row Transition Metals with N,N’,N and S,N,S Pincer-type Ligands

Abstract

This work began with the ambition of probing the application of pincer ligands to control the geometry and bonding environments of metal centers by employing the bis(imino) pyridine ligand scaffold and an assortment of transition metals, particularly silver and a variety of paramagnetic centers. The work was further extended to the investigation of the SNS tridentate thiolate ligand backbone, specifically the bis(methylthiomethyl) pyridine and bis(ethylthiomethyl) pyridine ligand frameworks with a similary array of transition metal centres. Along with the reports of novel coordination compounds and analysis of trends in bonding, computational chemistry was utilized to correlate the data obtained experimentally with computed models. Synthesis, characterization and computational studies are presented herein. Chapter 1 presents a brief history of the bis(imino) pyridine ligand as well as its synthesis and characterization. Chapter 2 presents a brief history of the S,N,S ligand as well as its synthesis and characterization. Chapter 3 presents the synthesis of a series of first row transition metal bromide-bis(imino) pyridine complexes along with their characterizations and an analysis of bonding trends. Chapter 4 presents the synthesis of a series of first row transition metal bromide-S,N,S ligand complexes along with their characterizations and an analysis of bonding trends. Chapter 5 presents a general conclusion to the work.