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1NOYES CHEMICAL LABORATORY, UNIVERSITY OF ILLINOIS, URBANA
†
Now at the Department of Chemistry, University of Utah, Salt Lake City, Utah.
*
This research was supported by a grant from the Petroleum Research Fund administered by the American Chemical Society. Grateful acknowledgment is hereby made to donors of said fund. Also, the work was supported in part by the Office of Naval Research and by a grant from the University of Illinois Research Board.