Leung, Helen - Amherst College

个人简介

Ph.D., Chemistry, Harvard University (1988) M.A., Chemistry, Harvard University (1985) B.A., Biology, California State University, Northridge (1983) B.S., Chemistry, California State University, Northridge (1982) A.M. (honorary), Amherst College (2003) As a physical chemist, I am interested in applying physical laws to chemical systems to understand the behavior of atoms and molecules and how they interact with each other. The courses that I teach are concerned with these same ideas. Chemistry 161 (Chemical Principles) This course covers chemical equilibrium and chemical kinetics; in other words, where a reaction is going and how fast it takes to get there. Chemistry 371 (Physical Chemistry) This is a molecular thermodynamics course, in which advanced thermodynamics, together with its molecular interpretation, statistical thermodynamics, are examined. Chemistry 351 (Quantum Chemistry and Spectroscopy) The theory of quantum mechanics and its application to spectroscopic experiments are studied. Reviewer, Journal of Chemical Physics, Journal of Molecular Spectroscopy, Journal of Molecular Structure, Journal of Physical Chemistry Reviewer for proposals submitted to the National Science Foundation, Department of Energy, and the American Chemical Society Petroleum Research Fund Member of Advisory Panel, CAREER Program, National Science Foundation Judge for the Rao Prize Competition, International Symposium on Molecular Spectroscopy, Ohio State University, Columbus, OH Honors Examiner, Chem 105 (Theory and Applications of Spectroscopy), Swarthmore College, PA, Spring 2001 and 2002 Panel Member, "Envisioning the Chemical Sciences," The 220 th National Meeting of the American Chemical Society, Washington, DC, 2000 PKAL Faculty for the 21 st Century Member, Project Kaleidoscope Cross-Cultural Mentoring Roundtable, sponsored by the American Chemical Society and the Department of Minority Affairs, Boston, MA, 1998 Panel Member, "Careers in Education at Principally Undergraduate Institutions," Massachusetts Institute of Technology, Cambridge, MA, 1997 Member of Advisory Panel, Instrumentation and Laboratory Improvement Program, National Science Foundation Member of American Physical Society, American Chemical Society, American Physical Society, Council on Undergraduate Research, the Honor Society of Phi Kappa Phi, Sigma Xi

近期论文

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H. O. Leung, M. D. Marshall, M. A. Wronkovich,* "The microwave spectrum and molecular structure of Ar-2,3,3,3-tetrafluoropropene," Journal of Molecular Spectroscopy, in press (2017), doi: 10.1016/j.jms.2017.04.012. N. A. Seifert, D. P. Zaleski, R. Fehnel, M. Goswami, B. H. Pate, K. K. Lehmann, H. O. Leung, M. D. Marshall, J. F. Stanton, "The Gas-phase Structure of the Asymmetric, Trans-Dinitrogen Tetroxide (N2O4), Formed by Dimerization of Nitrogen Dioxide (NO2), from Rotational Spectroscopy and Ab Initio Quantum Chemistry," Journal of Chemical Physics 146, 134305 (2017), doi: 10.1063/1.4979182. H. O. Leung and M. D. Marshall, "Effect of Chlorine Substitution in Modulating the Relative Importance of Two Intermolecular Interactions: the Microwave Spectrum and Molecular Structure of (E)-1- Chloro-2-fluoroethylene-HCl," J. Phys. Chem. A 120, 7955 (2016), doi: 10.1021/acs.jpca.6b07739. H. O. Leung, M. D. Marshall, and A. J. Lee,* "The Microwave Spectrum and Molecular Structure of (E)-1-Chloro-2-fluoroethylene-HF: Revealing the Balance Among Electrostatics, Sterics, and Resonance in Intermolecular Interactions," J. Phys. Chem. A 120, 7935 (2016), doi: 10.1021/acs.jpca.6b07252. H. O. Leung, M. D. Marshall, J. P. Messinger,* G. S. Knowlton,* K. M. Sundheim,* and J. C. Cheung-Lau,* "The Microwave Spectra and Molecular Structures of 2-Chloro-1,1-difluoroethylene and Its Complex with the Argon Atom," Journal of Molecular Spectroscopy 305, 25 (2014), doi: 10.1016/j.jms.2014.09.011. H. O. Leung and M. D. Marshall, "Effect of Acid Identity on the Geometry of Intermolecular Complexes: The Microwave Spectrum and Molecular Structure of Vinyl Chloride-HF," J. Phys. Chem. A 118, 9783 (2014), doi: 10.1021/jp508278d. H. O. Leung, M. D. Marshall, J. L. Mueller,* and B. K. Amberger,* "The Molecular Structure of and Interconversion Tunneling in the Argon-cis-1,2-Difluoroethylene Complex," Journal of Chemical Physics 139, 134303 (2013). H. O. Leung, M. D. Marshall, and F. Feng,* "Microwave Spectrum and Molecular Structure of Vinyl Chloride-Acetylene, a Side Binding Complex," Journal of Physical Chemistry A 117, 13419 (2013). M. D. Marshall, H. O. Leung, and C. E. Calvert,* "Molecular Structure of the Argon-(Z)-1-Chloro-2-fluoroethylene Complex from Chirped-pulse and Narrow-band Fourier Transform Microwave Spectroscopy," Journal of Molecular Spectroscopy 280, 97(2012). H. O. Leung, M. D. Marshall, A. T. Bozzi,* P. M. Cohen,* and M. Lam,* "Microwave Spectrum and Molecular Structure of the 1-Chloro-1-fluoroethylene-Hydrogen Fluoride Complex," Journal of Molecular Spectroscopy 267, 43(2011). M. D. Marshall, H. O. Leung, B. Q. Scheetz,* J. E. Thaler,* and J. S. Muenter, "A Chirped Pulse Fourier Transform Microwave Study of the Refrigerant Alternative 2,3,3,3-Tetrafluoropropene," Journal of Molecular Spectroscopy 266, 37(2011). H. O. Leung, M. D. Marshall, and D. Grimes,* "Rotational Spectroscopy and Molecular Structure of the 1-Chloro-1-fluoroethylene-Acetylene Complex," Journal of Chemical Physics 134, 034303 (2011). H. O. Leung and M. D. Marshall, "Rotational Spectra of 34S- and 33S-containing Isotopolgues of Laser Ablation Generated Tin Monosulfide," Journal of Molecular Spectroscopy 265, 52 (2011). H. O. Leung, M. D. Marshall, M. R. Ray,* and J. T. Kang,* "Rotational Spectroscopy and Molecular Structure of the 1,1,2-Trifluoroethylene-Hydrogen Chloride Compex," Journal of Physical Chemistry A 114, 10975 (2010). H. O. Leung, M. D. Marshall, and B. K. Amberger,* "Fourier Transform Microwave Spectroscopy and Molecular Structure of the Trans-1,2-difluoroethylene-Hydrogen Fluoride Compex," Journal of Chemical Physics 131, 204302 (2009). H. O. Leung, M. D. Marshall, T. L. Drake,* T. Pudlik,* N. Savji,* and D. W. McCune,* "Fourier Transform Microwave Spectroscopy and Molecular Structure of the 1,1-Difluoroethylene-Hydrogen Fluoride Complex," Journal of Chemical Physics 131, 204301 (2009). H. O. Leung, M. D. Marshall, A. L. Vasta,* and N. C. Craig, "Microwave Spectra of Eight Isotopic Modifications of 1-Chloro-1-Fluoroethylene," Journal of Molecular Spectroscopy 253, 116 (2009). C. S. Brauer, G. Sedo, E. Dahlke, S. Wu, E. M. Grumstrup, K. R. Leopold, M. D. Marshall, H. O. Leung, and D. G. Truhlar, "Effects of 18O Isotopic Substitution on the Rotational Spectra and Potential Splitting in the OH-OH2 complex: Improved Measurements for 16OH-16OH2 and 18OH-18OH2, New Measurements for the Mixed Isotopic Forms, and Ab Initio Calculations of the 2A' - 2A'' Energy Separation," Journal of Chemical Physics 129, 104304 (2008). H. O. Leung, M. D. Marshall, W. T. Cashion,* and V. L. Chen,* "Rotational Spectroscopy and Molecular Structure of the 1,1,2-Trifluoroethylene-Acetylene Complex," Journal of Chemical Physics 128, 064315 (2008). H. O. Leung and M. D. Marshall, "Rotational Spectroscopy and Molecular Structure of 1,1,2-Trifluoroethylene and the 1,1,2-Trifluoroethylene-Hydrogen Fluoride Complex," Journal of Chemical Physics 126, 114310 (2007). H. O. Leung and M. D. Marshall, "Rotational Spectroscopy and Molecular Structure of the 1,1-Difluoroethylene-Acetylene Complex," Journal of Chemical Physics 125, 154301 (2006). C. S. Bauer, G. Sedo, E. K. Grumstrup, K. R. Leopold, M. D. Marshall, and H. O. Leung, "Effects of Partially Quenched Orbital Angular Momentum on the Microwave Spectrum and Magnetic Hyperfine Splitting in the OH-water Complex," Chemical Physics Letters 401, 420 (2005). H. O. Leung, W. T. Cashion,* K. K. Duncan,* C. L. Hagan,* and S. Joo,* "Nuclear Quadrupole Hyperfine Structure in the Microwave Spectrum of HCl-N2O: Electric Field Gradient Perturbation of N2O by HCl," Journal of Chemical Physics 121, 237 (2004).