UT Seal   Chemical Education Group Members
 

Dr. J.J. Lagowski

         

     
spacer Dr. J.J. Lagowski
spacer Dr. Kent K. Stewart
spacer Dr. Donna C. Lyon
spacer

Brian Arneson

spacer Anna Bergstrom
spacer Justin Briggle
spacer Gloria Brown Wright
spacer M. J. Elliott
spacer Brad Herrick
spacer Deborah Walker
spacer Jessica White

 

 

 

 

 
Education:
B.S., University of Illinois, 1952
M.S., University of Michigan, 1954
Ph.D., Michigan State University, 1957
Ph.D. (cantab.), Cambridge University, 1959

E-mail: jjl@mail.cm.utexas.edu

Telephone: (512) 471-3288

Office: WEL 4.328

 

Research Interests: My interests in chemistry at The University are expressed in terms of two broad considerations: conventional bench-oriented chemical research and research in chemical education. Thus, my research group consists of students with these kinds of interests. My chemical research interests include general solution phenomena in non-aqueous solvents and organometallic pi-complexes; electrochemical and spectroscopic methods are widely employed by students working in these areas.

Non-aqueous solution chemistry: The interest in nonaqueous solution chemistry is focused primarily on anhydrous liquid ammonia although we have had interests in amine and ether solvents as well as in molten salts. Earlier work from these laboratories developed acidity scales in liquid ammonia using uv-vis absorption and NMR spectroscopy; in addition, the structure of the pure solvent in relationship to solutions of ionic species has been investigated using infrared and Raman spectroscopy. Recently, the solution species responsible for unusual redox process in liquid ammonia have been investigated. For example, the reactions of the solvated electron as a chemical species is being elucidated. Earlier work in this area revealed the existence of the auride ion (Au-), arising from the reaction of metal-ammonia solutions with elemental gold. This process can also be accomplished electrochemically at a microelectrode using modern cyclic voltammetric techniques. Similar results have been obtained in anhydrous ethylenediamine as a solvent. The initial interest in monoatomic anionic species has been extended to polynuclear mono- and hetero-anions (the Zintl ions) that can be formed by the elements in groups IIIA, IVA, and VA, e.g., TlSn93-, Sn94-, P73-. Redox transformations (e.g., P73- --> P3-) can be studied by cyclic volumetric methods, uv-vis spectroscopy, and spectroelectrochemical techniques. The interest in these systems is not only in the solution species, but also the characteristics of the films formed when Zintl anions are oxidatively discharged. Thus, for example, it is of interest to relate the structure of the phosphorous film formed when P73- and P3- are discharged at a platinum microelectrode to the structures of the known allotropes of phosphorous.
 
Organometallic chemistry: The basic interest in organometallic chemistry is in the syntheses and the properties of materials. Specifically, we have used metal atom synthesis techniques to prepare a variety of substituted p-arene chromium complexes; our interests in these compounds include an (electrochemical) elucidation of the electron environment of the metal atom as a function of the arene substitutent. In addition we have used metal atom syntheses to prepare multi-metal, p-complexes [e.g., bis(p-arenechromium) p-naphthalene] incorporating arene ligands designed to transmit electronic effects among the metal sites. We have extended the metal atom synthesis technique to prepare organometallic polymers in which the metal atoms are directly involved in the polymer chain, i.e., poly(m-naphthalene chromium). We are currently engaged in a study of the electrical properties of such polymers. Recently we have become interested in using substituted in organometallic compounds.
 
Chemical Education: My research in chemical education is currently focused on the improvement of the educational process, both from a teaching and a learning point of view, using techniques involving interactive technology-computing and interactive video. Investigations into the efficacy of using certain computer methods (expressed with microcomputers) on instruction in laboratory courses and in lecture courses are in progress.
     
 
 

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6 August 2001
Comments to mjelliott@mail.utexas.edu