Chemistry: Charles Wood
Heterotrimetallic Coordination: Incorporating Neodymium into the Nickel 12-Metallacrown-4 Framework
Researcher: Charles Wood
Faculty Mentor: Dr. Jessica Fautch
Abstract: Heterotrimetallic coordination complexes are studied due to their exciting applications of molecular magnetism, luminescence, and catalysis. Metallacrowns are the inorganic complement of crown ethers; they traditionally have a repeat unit of [M-N-O] and can bind a wide range of cations including alkali and 4f cations (i.e. neodymium) in the central cavity (Azar et al., 2014). A variety of heterotrimetallic coordination complexes can be synthesized with variations in the following components: lanthanides, alkali metal cations, 12-MC-4 inducing hydroxamates and bridging monoanion carboxylates. This work focuses on one such complex, NdIIINa(OAc)4[12-MCNiIII(N)shi-4](H2O)4٠6DMF (Compound 1, Scheme 1) as well as the intermediate complexes giving rise to this Nd-complex. In Compound 1, neodymium is the lanthanide used in the central cavity of the complex and sodium is the alkali metal cation in the central cavity. The 12-MC-4 inducing hydroxamate used is salicylhydroxamic acid (“shi”) and acetate is the bridging monoanion carboxylate for Compound 1. The intermediate complexes leading to Compound 1 have variations of the cations in the central cavity, as well as the solvent used in crystal formation.