基本信息
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个人简介
Robert A. Jacobson, professor, received his B.A. in chemistry from the University of Connecticut in 1954 and his Ph.D. from the University of Minnesota in 1959. His primary fields of interest are X-ray crystallography, exemplified by his membership in the American Crystallographic Association, and in molecular mechanics methods.
Research Interests
The research emphasis in my group is on the elucidation of structures of materials in the solid state. The primary technique which we use in this work is that of diffraction, usually x-ray diffraction but occasionally also neutron diffraction. We not only use these techniques to determine the structures of a variety of chemically significant materials, but also, as a physical chemist, are as interested in the further development of such techniques.
In terms of applications, we participate in collaborative studies with many other groups whose research is described elsewhere in this document, and with other groups in chemical engineering, materials science, and physics that make up the Ames Laboratory of the Department of Energy. Of special interest is the molecular structure of materials with the potential of showing long range interactions in the solid state. One recent example is the structure of palladium nickel porphyrin compound prepared by Keith Woo's group. The structure is shown in the figure; it contains 89 non-hydrogen atoms whose coordinates had to be determined. This investigation was carried out using diffraction information obtained from a small single crystal of the material (0.36 x 0.36 x 0.10 mm). A total of 21,343 diffraction maxima were measured in this study.
Selected Publications
Jacobson, R. A. and Lipscomb, W. N., "The B8C18 Structure: A New Polyhedron in Small Molecules", J. Am. Chem. Soc. 80, 5571 (1958).
Jacobson, R. A. and Lipscomb, W. N., "Molecular and Crystal Structure of B8C18 II. Solution of the Three-Dimensional Structure", J. Chem. Phys. 31, 605 (1959).
Rossmann, M. G., Jacobson, R. A., Hirshfeld, F. L., and Lipscomb, W. N., "An Account of Some Computing Experiences", Acta Cryst. 12, 530 (1959).
Jacobson, R. A., Wunderlock, J. A., and Lipscomb, W. N., "Structure of Cellobiose", Nature 184, 1719 (1959).
Jacobson, R. A., Wunderlich, J. A., and Lipscomb, W. N., "The Crystal and Molecular Structure of Cellobiose", Acta Cryst. 14, 598 (1961).
Jacobson, R. A., Penfold, B. R., and Lipscomb, W. N., "A Superposition Method and Program for Image-Seeking Procedures in Crystallography" as part of book entitled "Computing Methods and the Phase Problem in X-rays Crystal Structure Analysis, edited by R. Pepinsky, J. M. Robertson and J. C. Speakman. Pergamon Press, Inc., New York, 1961, 326 pp.
Goldstein, P. and Jacobson, R. A., "Structure of Dimethyl Phosphinoborine Tetramer", J. Amer. Chem. Soc. 84, 2457 (1962).
Mighell, A. D. and Jacobson, R. A., "Analysis of Three-Dimensional Patterson Maps Using Vector Verification", Acta Cryst. 16, 443 (1963).
Gorres, B. T. and Jacobson, R. A., "The Use of Frequency Check in the Vector Verification Method", Acta Cryst. 17, 1599 (1964).
Mighell, A. D. and Jacobson, R. A., "The Crystal Structure of 3,3,4,4-Tetrahydrofurantetrol [An Application of Vector Verification]", Acta Cryst. 17, 1554 (1964).
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R. V. DAVIS, D. J. WINTERGRASS,M. N. JANAKIRAMAN, E. M. HYATT,R. A. JACOBSON,L. M. DANIELS, A. WROBLEWSKI, J. P. AMMA, S. K. DAS,J. G. VERKADE
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