Biographical Memoirs Volume 77 (1999) / Chapter Skim
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Michael J.S. Dewar
Michael J.S. Dewar
Pages 64-77
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From page 65... ...
He was one of the first, if not the first, organic chemist to master molecular orbital theory and to apply it to problems in organic chemistry. His sparkling intellect en c!
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From page 66... ...
The book represented a landmark, as it was the first treatment of organic chemistry in terms of molecular orbital theory. In 1951, at the age of thirty-three, Dewar accepted a chair at Queen Mary College at the University of Lonclon.
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It also proviclec! a simple explanation for the structure of "non-cIassical" carbenium ions for which Winstein was starting to provide experimental evidence at the time, en c!
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From page 68... ...
"perturbational molecular orbital theory." This approach was clearly superior to the purely qualitative resonance theory then still in use, but the papers were written in such a conclensec! manner that the theory was virtually incomprehensible to practicing bench chemists, the intenclec!
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From page 69... ...
that charge transfer makes a relatively unimportant contribution to the stability of charge-transfer complexes, contrary to the general belief at the time. Most importantly, at Chicago Dewar starter!
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Dewar began to focus his energy totally on the development of increasingly sophisticated semi-empirical methods for quantitative molecular orbital computations on large organic molecules, inclucling novel ions, conjugatec! systems, en c!
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give three reasons with disarming charm: (~) Latin is sufficiently complex to provicle superb intellectual training, teaching young people how to reason through intricate problems, (2)
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by the American Chemical Society, "A Semi-Empirical Life," which uncharacteristically provides a seemingly embittered en c! convoluter!
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His list of professional society awards serves as a nearly complete list of those available to organic chemists: 1974 1976 1977 1978 1982 1984 1954 Tilclen Mecial of the Chemical Society 1961 Harrison Howe Awarc! of the American Chemical Society Robert Robinson Mecial, Chemical Society G
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of the American Chemical Society 1989 Tetrahedron Prize for Creativity in Organic Chemistry 1990 Woric! Association of Theoretical Organic Chemists Mecial Chemical Pioneer Award, American Institute of Chemists 994 American Chemical Society Awarc!
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18:C71. 1952 A molecular orbital theory of organic chemistry.
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Ground states of conjugated molecules.
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From page 77... ...
Yu. SAM-1: The first of new series of general purpose quantum mechanical molecular models.
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