Gaspar, Peter - Washington University in St. Louis

个人简介

1973-present, Professor of Chemistry, Washington University, St. Louis, MO 2004, Visiting Foreign Research Fellow, Tsukuba University, Tsukuba, Japan 1969-1990, Research Collaborator, Department of Chemistry, Brookhaven National Laboratory, Upton, NY. 1990-1991, Member, editorial advisory board, ACS journal Organometallics 1988, Visiting Professor, Universite des Sciences et Techniques du Languedoc, Montpellier, France 1988, Traveling Lectureship, French Ministry of Education 1987, Visiting Professor of Chemistry, Princeton University, Princeton, NJ 1973, Fulbright Lecturer and Visiting Professor of Organic Chemistry, Instituto Superior Tecnico, Lisbon, Portugal 1973, NATO Traveling Lectureship, Germany, Holland, Switzerland 1969-1970, Visiting Associate Professor of Chemistry, Princeton University, Princeton, NJ 1968-1973, Associate Professor of Chemistry, Washington University, St. Louis, MO 1963 -1968, Assistant Professor of Chemistry, Washington University, St. Louis, MO 1962-1963, Postdoctoral Fellow, Department of Chemistry, California Institute of Technology, Pasadena, CA 1961-1962, NATO Postdoctoral Fellow, Institut fuer organische Chemie, Heidelberg University, Heidelberg, Germany

研究领域

The overall goal of the Gaspar research group is to extend the mechanistic ideas of organic chemistry to the prediction and understanding of covalent bond-making and bond-breaking throughout the periodic table. We are mechanistic organic/main group chemists, and much of our work is near the borderline between organic and inorganic chemistry. We study heavier analogs of reactive intermediates in organic reactions such as carbenes R2C:. The reactivity of these intermediates is so distinctive that product studies can reveal similarities and differences between molecules based on heavier elements and those based on first-row elements. The activities of our laboratory span much of experimental chemistry. Our group synthesizes precursors for reactive intermediates and authentic samples of products. We convert precursors into characterizeable species that are studied by solution photolysis, by gas-phase flow pyrolysis, and through the use of trapping reactions. Solution- and gas-phase flash photolysis experiments are used to detect reactive intermediates in-situ and also to study the kinetics of their reactions. Reactive intermediates carrying positive or negative charges are studied by quadrupole ion trap mass spectrometry (QITMS). Computational modeling of reaction systems by electronic structure calculations and by kinetic simulations plays an important role in our work and has helped us to magnify the effectiveness of our mechanistic studies.

近期论文

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Ashwini Bundhun, Ponnadurai Ramasami, Peter P. Gaspar, Henry F. Schaefer III, "Stannylenes: Structures, Electron Affinities, Ionization Energies and Singlet-Triplet Gaps of SNX2/SnXY and XSnR/SnR2/RSnR’ Species (X,Y=H,F, Cl, Br,I and R,R’= CH3, SiH3, GeH3, SnH3)" Inorg.Chem., 2012, 51, 851-863(2012). Ashwini Bundhun, Hassan H. Abdallah, Ponnadurai, Ramasami, Peter P. Gaspar, Henry F. Schaefer III, "Dicyanogermylenes: A Tale of Isomerizations and Interconversions," Inorg.Chem., 2012, 51, 12152-64. Dong Zhou, Clemens Reiche, Mrinmoy Nag, John A. Soderquist, Peter P. Gaspar, "Synthesis of 1-Stannacyclopent-3-enes and Their Role as Stannylene Precursors, Organometallics, 2009, 28, 2595-2608. Mrinmoy Nag, Peter P. Gaspar, "A Computational Study of the Mechanism of Addition of Singlet Carbene Analogues to 1,3-Butadiene to Form 1,1Dimethyl-metallacyclopent-3-enes [MMe2C4H6, M = Si, Ge, Sn] and Their Reverse Retro-addition Reactions," Organometallics, 2009, 28, 5612-5622. Amber L. Russell, Henry W. Rohrs, David Read, Peter P. Gaspar, and Michael L. Gross, "Studies of Thermally Generated Allyl Radical with Aromatic Radical Cations by Fourier Transform Mass Spectrometry," Int.J.Mass Spectrom, 2009, 287, 8-15. A. Sekiguchi, T. Tanaka, M. Ichinohe, K. Akiyama, P. P. Gaspar, "Tri-tert-butylsilylsilylenes with Alkali Metal Substituents tBu3SiSiM (M = Li,K)," J.Am.Chem.Soc., 2008, 130, 426-427. Dong Zhou, Amber L. Russell, David Read, Henry W. Rohrs, Michael L. Gross, and Peter P. Gaspar, "A Retro-Diels Alder Route to Tetramethyldisilene Me2Si=SiMe2 Revisited: Flow Pyrolysis of 1,1,2,2-Tetramethyl-1,2-disilacyclo-hex-4-ene" Silicon Chemistry, 2007, 3, 117-122. Rosa Becerra, Peter P. Gaspar, Cameron R. Harrington, William J. Leigh, Ignacio Vargas-Baca, Robin Walsh, Dong Zhou, "Direct Detection of Dimethyl-stannylene and Tetramethyldistannene in Solution and the Gas Phase by Laser Flash Photolysis of 1,1-Dimethylstannacyclopent-3-enes," J.Am.Chem.Soc. 2005, 127, 17469-78. Xinping Liu, Diana Ivanova, Daryl Giblin, Michael L. Gross, Peter P. Gaspar, "Gas-Phase Synthesis, Characterization and Reactivity Studies of the Prototype Aromatic Phosphirenylium Ion," Organometallics, 2005, 24, 3125-3135, P. P. Gaspar, W. C. Eckelman, S. A. Bock, C. A. Levy, P. Markusch, J. D. Holten, J. J. Frost, R.-J. Hwang, R. T. Conlin, B. J. Cornett, Y.-S. Chen, B. H. Cohen, A. P. Helfer, S. Konieczny, E. C.L. Ma, S. H. Mo, M. Xiao, D. Lei, B. H. Boo, D. L. Svoboda, J. Frueh, M. E. Lee, M. North, F. Gonzalez, J. B. Wilking, D. H. Pae, T. Haile, K. L. Bobbitt, D. J. Berger, T. Chen, W. R. Winchester, P. Jiang, D. Trieber II, D. Zhou, D. Read, X. Liu, J. S.Prell, "Learning from Silylenes and Supersilylenes," Organosilicon Chemistry VI, N. Auner, J. Weis eds., Verlag Chemie, Weinheim, 2005, pp. 10-24.http://www.chemistry.wustl.edu/faculty/gaspar