University of Minnesota
University of Minnesota

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The Tolman Group works at the interfaces of inorganic, biological, and polymer chemistry to address important problems related to human health and the environment.

Overview of Research

Current research in the Tolman group encompasses synthetic bioinorganic and organometallic/polymer chemistry. In the bioinorganic area, our objective is to gain a fundamental structural, spectroscopic, and mechanistic understanding of metalloprotein active sites of biological and environmental importance via the synthesis, characterization, and examination of the reactivity of model complexes. The current goal of our research in the organometallic/polymer area is to synthesize and characterize a variety of metal complexes for use as catalysts for the polymerization of cyclic esters and for converting biomass feedstocks to useful monomers. In this project, particular emphasis is being placed on developing controlled synthesis of polymers derived from renewable resources.

While the synthesis of new molecules lies at the center of our research effort, we also use a wide array of techniques to characterize the compounds we prepare and to examine their reactivity. Among the characterization methods that we use are X-ray crystallography, NMR, EPR, UV-Vis, FTIR, and resonance Raman spectroscopy, mass spectrometry, GC/M, SEC, DSC, tensile testing, and cyclic voltammetry. We also endeavor to unravel reaction mechanisms through kinetics and isotope labeling experiments. Students and postdoctoral associates in the group thus obtain a highly multidisciplinary training in the synthesis, structural and spectroscopic characterization, and mechanistic study of organic, inorganic, and organometallic molecules and polymers.

**Check out our parody of the Sarah McLachlan SPCA commercial on youtube.**

group summer 2015

Financial support for the research is currently provided by the National Institutes of Health, National Science Foundation, and the US-Israeli National Science Foundation.

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Recent News

**The paper "Secondary Sphere Hydrogen Bonding in Monocopper Complexes of Potentially Dinucleating Bis(carboxamide) Ligands" by Benjamin D. Neisen, Pavlo V. Solntsev, Mohammad R. Halvagar and William B. Tolman has appeared online (DOI: 10.1002/ejic.201501060) in the European Journal of Inorganic Chemistry.
**Welcome to Megan Fieser, a new postdoctoral researcher in the lab who is working on a collaborative Center for Sustainable Polymers project focused on understanding the mechanism of copolymerization of bio-derived anhydrides with epoxides. Megan received her Ph.D. from UC Irvine, where she performed research in organometallic lanthanide/actinide chemistry in the group of Bill Evans. -- 7/27/15
**Best wishes to Elodie Marlier, who has left the lab to start her new position as Assistant Professor at the University of Wisconsin, River Falls. We're glad she's nearby, and wish her the best!-- 7/27/15
**Welcome to Dan Stasiw, a new postdoctoral researcher in the lab who is working on a project focused on understanding cyclic ester polymerization mechanisms under the rubric of the Center for Sustainable Polymers. Dan joins us after receiving his Ph.D. from North Carolina State University.-- 7/7/15
**The paper "[CuO]+ and [CuOH]2+ Complexes: Intermediates in Oxidation Catalysis?" by Nicole Gagnon and William Tolman has been published online in Accounts of Chemical Research. See: -- 6/16/15
**Congratulations to Pavlo Solntsev, who has accepted a scientist position at Cortec Corporation, starting June 22, 2015, where he'll work on biorenewable corrosion inhibitors. It's always great to see group members land a good job! -- 5/13/15