Design and Synthesis of Nitrogen Containing Heterocyclic Ligands and the Formation of Coordination Complexes and Networks
Date of Graduation
Master of Science in Chemistry
The desire to construct three-dimensional solids with predictable structure is driven by the correlation between structure and function. The use of non-covalent interactions to self-assemble small molecular components is one potential way to construct functional solids. Potential applications range from magnetic, electronic and non-linear optical materials to catalysts and synthetic zeolites. The self-assembly of organic ligands and metal cations is a powerful means to form one-, two- and three-dimensional coordination networks. We are specifically interested in the design and synthesis of nitrogen containing heterocyclic ligands with the intentions of forming one-dimensional ordered ligand:metal crystalline solids. In this study an array of 2,6- and 2,3-diarylpyrazine ligands have been synthesized and mixed with a variety of silver(I) salts producing discrete ligand:metal complexes as well as more complex polymeric networks. The ligand 1.2-bis(2'-pyrazineethynyl)pyrazine was designed to form ordered bimetallic networks by size selection between metal cations. A bimetallic network was achieved with small silver(I) cations and larger dicopper(II) tetraacetate moieties. Discrete 1:1 ligand:silver and 2:2 ligand:copper complexes were also produced. When an additional equivalent of silver(I) cations was mixed with the ligand a 1:2 ligand:silver polymer formed.
© Nate C. Schultheiss
Schultheiss, Nate C., "Design and Synthesis of Nitrogen Containing Heterocyclic Ligands and the Formation of Coordination Complexes and Networks" (2003). MSU Graduate Theses. 1876.