Texas Tech University
TTU HomeDepartment of Chemistry and Biochemistry Faculty Dr. Christopher Bradley

Dr. Christopher Bradley

Title:

Assistant Professor

Education:

Ph.D., Cornell University, 2006; Postdoctoral Study, University of California, Berkeley, 2006-2008

Research Area:

Inorganic Chemistry & Organometallic Chemistry

Office:

Phone:

Fax:

Email:

Chemistry 125-A

806-742-3067

806-742-1289

Chris.Bradley@ttu.edu

 

Personal Research Web Site
[coming soon!]

Principal Research Interests

Research in our group combines interest in fundamental structure and reactivity studies of organometallic complexes with application of such compounds towards the discovery or improvement of valuable catalytic reactions. Students gain a firm foundation in organic and inorganic synthesis, including Schlenk, glovebox, and high vacuum techniques. A strong mechanistic background is also developed using physical inorganic techniques, through kinetic, computational, and isotopic labeling experiments. Preparation of well-defined transition metal complexes expose students to a wide range of characterization techniques, including multinuclear NMR spectroscopy and X-ray diffraction methods.

Broad research themes within the group are described below and include small molecule activation/functionalization (specifically alkanes) and atom economical or “green” chemistry promoted by transition metal catalysts.

Hydrocarbon Activation and Functionalization by Transition Metal Sandwich and Half Sandwich Complexes

Currently, society harnesses the energy of the C-C and C-H bonds of alkanes during combustion which generates significant amounts of CO2 through the breakdown of hydrocarbon chains. Though alkanes are a valuable feedstock for this process, hydrocarbons are relatively underutilized as carbon building blocks for commercial chemicals. One area of interest in the group involves the synthesis of masked forms of low electron count transition metal complexes and subsequent reactivity of these compounds with small molecules, such as hydrocarbons. Catalytic functionalization of alkanes using these complexes will also be explored.

Organometallic Catalysis in Water

Water, though usually excluded from organometallic reagents at all costs, offers several advantageous characteristics as a solvent from both a safety and environmental standpoint. Furthermore, water’s anomalous properties compared to common organic solvents (i.e. density, high dielectric constant, and high heat of formation) create a unique chemical environment.

Although transition metals are able to direct the activation of a variety of E-H bonds (where E = O, N, or C), much work remains in catalytic functionalization of C-H bonds in complex substrates, specifically those which display biological activity. We hope to develop versatile C-H activation catalysts, based on robust, water-soluble metal complexes to allow the deuteration/triteration or dehydrogenation of saturated substrates in water. Ultimately, these reactions will be extended to water soluble, biologically relevant compounds in an effort to expand current libraries and to selectively label natural products for use as tracers in biochemical pathways.

 

Representative Publications