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Hitchcock Foundation Lectures: "The Development of the Concept of Chemical Bond." January 17, 1983. University of California, Berkeley. Research by Roscoe Dickinson. (1:10)

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Linus Pauling: I put this slide in of hexamethylenetetramine to show tetrahedral character, the tetrahedral character of atoms. The six carbon atoms are tetrahedrally bonded to the neighbors and the four nitrogen atoms have bonds at three tetrahedron corners to the carbon atoms. This is the first structure of an organic compound to have been determined precisely, the bond lengths and bond angles. It was...done by Roscoe Gilkey Dickinson, x-ray crystallographer with whom I began my graduate work in Pasadena in 1922, who taught me the science of x-ray diffraction of, by crystals for the determination of their structures as it was practiced then. It was a very powerful, valuable technique this x-ray diffraction, and of course after awhile other organic compounds as well as inorganic compounds began to be determined.

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Date: January 17, 1983
Genre: sound
ID: 1983v.2
Copyright: More Information

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