Professor of Chemistry
Group Lab Site
415 South Street
Waltham, MA 02454-9110
Ph.D., California Institute of Technology
My research entails the synthesis of new ligands and transition metal complexes with the ultimate goal of uncovering new approaches to the catalytic activation and functionalization of small molecules and organic substrates. These types of processes are critical for the development of sustainable energy technology and for the catalysis of organic transformations.
Although I am interested in a number of different projects, the underlying theme for my research program is to examine the ways in which different components of a transition metal complex work together and how this cooperation affects the reactivity of the complex as a whole. Specifically, I am interested in examining the cooperation between
- two metal centers in bimetallic frameworks
- metal centers and non-innocent ligands
Although the primary focus of my research is synthesis, the research pursued by my group also entails a large variety of characterization techniques including multinuclear NMR, IR, UV-Vis and EPR spectroscopies, as well as magnetic and electrochemical measurements. In addition, theoretical investigations into the electronic structure and reactivity of particularly interesting transition metal complexes synthesized in my research group are studied using density functional theory (DFT) calculations.
Exploring Trends in Metal-Metal Bonding, Spectroscopic Properties, and Conformational Flexibility in a Series of Heterobimetallic Ti/M and V/M Complexes (M = Fe, Co, Ni, and Cu). Wu B, Wilding MJ, Kuppuswamy S, Bezpalko MW, Foxman BM, Thomas CM. Inorg Chem. (2016).
Krogman J.P., Bezpalko M.W., Foxman B.M., Thomas C.M.* "Multi-electron redox processes at a Zr(iv) center facilitated by an appended redox-active cobalt-containing metalloligand." Dalton Trans. 45(27):11182-90 (2016).
Wu B., Gramigna K.M., Bezpalko M.W., Foxman B.M., Thomas C.M.* "Heterobimetallic Ti/Co Complexes That Promote Catalytic N-N Bond Cleavage." Inorg Chem. 54(22):10909-17 (2015).
Evers-McGregor D.A., Bezpalko M.W., Foxman B.M., Thomas C.M.* "N-heterocyclic phosphenium and phosphido nickel complexes supported by a pincer ligand framework." Dalton Trans. 45(5):1918-29 (2016).
Krogman, J.P.; Foxman, B.M.; Thomas, C.M.* "Formation and Subsequent Reactivity of a N-2-Stabilized Cobalt-Hydride Complex." Organometallics. 2015, 34, 3159-3166.
Bezpalko, M. W.; Foxman, B. M.; Thomas, C. M.* “Use of Bidentate Ligand Featuring an N-Heterocyclic Phosphenium Cation (NHP+) to Systematically Explore the Bonding of NHP+ Ligands with Nickel.” Inorg. Chem. 54, 8717-8726 (2015).
Wu, B.; Bezpalko, M. W.; Foxman, B. M.; Thomas, C. M.* “A Heterobimetallic Complex Featuring a Ti-Co Multiple Bond and Its Application to the Reductive Coupling of Ketones to Alkenes.” Chem. Sci., 6, 2044-2049 (2015).
Kuppuswamy, S.; Bezpalko, M. W.; Powers, T. M.; Wilding, M. J. T.; Brozek, C. K.; Foxman, B. M.; Thomas, C. M.* “A Series of C3-Symmetric Heterobimetallic Cr/M (M = Fe, Co, Cu) Complexes.” Chem. Sci., 1617-1626 (2014).
Krogman, J. P.; Thomas, C. M.* “Metal-Metal Multiple Bonding C3-Symmetric Bimetallic Complexes of the First Row Transition Metals.” Chem. Commun. 2014, 50, 5115-5127 (invited Feature Article for Emerging Investigators Special Issue).