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H. Floyd Davis

Professor

Olin Chemistry Research Wing, Room 260B
hfd1@cornell.edu
607-255-0014

Website(s)

Overview

The Davis group uses laser and molecular beam methods to study the dynamics of elementary bimolecular and photochemical reactions.   Reactions of interest involve organic and atmospheric free radicals, as well as transition metal atoms and simple transition metal complexes.

Keywords

Experimental studies of bimolecular chemical reaction dynamics, catalysis, combustion and atmospheric chemistry

Departments/Programs

  • Chemistry and Chemical Biology

Graduate Fields

  • Chemistry and Chemical Biology

Research

We experimentally study the dynamics of chemical reactions relevant to catalysis, combustion, and atmospheric chemistry. Our research employs photolytic and pyrolytic techniques to generate molecular beams containing neutral transition metal atoms, complexes, free radicals, and aerosol particles. Reactions are initiated by crossing such beams with a second molecular beam under single collision conditions. The angular and velocity distributions of the reaction products from single bimolecular collisions are measured to learn about: 1) the branching ratios for competing reactions; 2) the reaction mechanism(s); and 3) the disposal of excess energy into the products' degrees of freedom.

Courses

Publications

Collision Complex Lifetimes in the Reaction C6H5 + O2 → C6H5O + O, Daniel R. Albert and H. Floyd Davis; J. Phys.  Chem. Lett., 1, 1107 (2010) DOI: 10.1021/jz100199z  Abstract, PDF*

Improved piezoelectric actuators for use in high-speed  pulsed valves, D.L. Proctor, D.R. Albert and H. Floyd Davis, Rev. Sci.Instrum. 81, 023106 (2010). AbstractPDF*

Vibrational vs. Translational Energy in Promoting a Prototype Metal-Hydrocarbon Insertion Reaction , D. L. Proctorand H. F. Davis, Proc. Nat. Acad. Sci. Am. 105, 12673 (2008).    Abstract  PDF* Poster (pdf)  Poster (ppt)

C-C vs. C-H Bond Activation of Alkynes by Early Second-Row Transition Metal Atoms, R.Z. Hinrichs, J. J. Schroden, and H.F. Davis,  J. Phys. Chem. A. 112, 3010 (2008).  PDF*