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Faculty Ronald Brisbois Staff Barbara Ekeberg Emeritus Faculty Truman Schwartz
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Paul J. Fischer - On sabbatical, 2008-2009 Professor Fischer will be spending the 2008-2009 school year on sabbatical in Berkeley, California, doing research in the lab of John Arnold at the University of California-Berkeley. Associate Professor of ChemistryB.S., University of Minnesota, 1993 Paul J. Fischer is an inorganic chemist who arrived at Macalester College in 2001. He teaches general chemistry and advanced inorganic chemistry. Paul is passionate about teaching chemistry and continuously strives to improve the collective experience for students in his courses. Since his arrival, he has spearheaded substantial curricular revision. In General Chemistry, Paul introduced a new two-semester laboratory curriculum that includes experiences in computational chemistry and permits first-year students direct application of chemical instrumentation. This laboratory curricula also supports the adoption of a new innovative textbook “Introduction to Molecular Thermodynamics” (R.M. Hanson and S.M.E. Green) that teaches fundamentals of physical and chemical change at an introductory level from a statistical mechanics perspective. In Advanced Inorganic Chemistry, Paul teaches a primarily physical inorganic curriculum that emphasizes group theory and applications of molecular symmetry to chemical problems. Molecular orbital theory and its utility to understand bonding, spectroscopy, magnetic properties and reactivity are stressed within the context of coordination and organometallic chemistry. In his research program, Paul and his undergraduate research students explore the chemistry of air and moisture sensitive organometallic metal carbonyl complexes with donor functionalized cyclopentadienyl ligands. Anionic complexes containing cyclopentadienyl ligands with pendant amine and phosphine donors are interesting since they possess dual nucleophilic sites, a soft anionic metal center and a hard main group donor atom.
Soft electrophiles (e.g., Paul will work as a visiting scholar in the John Arnold research laboratories at the University of California-Berkeley during his 2008-2009 sabbatical leave. Recent Publications of Macalester College Scholarship (6) “Tricarbonyl(chlorodiphenylstannyl){[η5-(2-dimethylaminoethyl]cyclopentadienyl} molybdenum.” Paul J. Fischer, Kristina M. Krohn, and Victor G. Young, Jr. Acta Cryst. 2009, E65, m558. (5) “Using Graphs of Gibbs Energy vs. Temperature in General Chemistry Discussions of Phase Changes and Colligative Properties.” Robert M. Hanson, Patrick Riley, Jeff Schwinefus, and Paul J. Fischer, J. Chem. Educ., 2008, 85, 1142. (4) “[(2-(Diphenylphosphino)ethyl)cyclopentadienyl]tricarbonylmetalates: Supporting Ligands for Reactions at Group VI Metal-Copper Bonds.” Paul J. Fischer, Aaron P. Heerboth (’08), Zoey R. Herm (’07), Benjamin E. Kucera, Organometallics 2007, 26, 6669. (3) “(2-(Trimethylammonium)ethyl)cyclopentadienyltricarbonylmetalates: Group VI Metal Zwitterions.” Paul J. Fischer, Zoey R. Herm (’07), and Benjamin E. Kucera, Organometallics 2007, 26, 4680. (2) “(2-(Dimethylammonium)ethyl)cyclopentadienyltricarbonylmetalates: Group VI Metal Zwitterions. Attenuation of the Br¯nsted Basicity and Nucleophilicity of Formally Anionic Metal Centers.” Paul J. Fischer, Kristina M. Krohn (’05), Edward T. Mwenda (’05), and Victor G. Young, Jr. Organometallics 2005, 24, 5116. (1) “(2-(Dimethylamino)ethyl)cyclopentadienyl Group VI Metal Carbonyl Anions and Divalent Tin(IV) Derivatives.” Paul J. Fischer, Kristina M. Krohn (’05), Edward T. Mwenda (’05), and Victor G. Young, Jr. Organometallics 2005, 24, 1776. Curriculum Vitae (April 2008) (PDF format, 200 kB) Email: fischer@macalester.edu |
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Faculty and Staff
![[SnR3]+](images/FischerAnion2.gif){kind=small}
, ![[AuPR3]+](images/FischerAnion3.gif){kind=small}
)
attack the metal providing neutral derivatives that preclude (thus
far!) intramolecular pendant donor interactions. Protonation of the
above anions where D = N and R = Me results in exclusive attack at the
tertiary amine affording novel organometallic zwitterions with pendant
ammonium ions and formally negatively charged metal tricarbonyl
fragments. These complexes feature novel intamolecular hydrogen bonds
with group VI metal acceptors that persist in solution based on NMR
spectroscopy. Research involving these and related metal complexes is
underway supported by funding from the American Chemical
Society-Petroleum Research Fund!|
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