1. Department of Chemistry, U.S. Naval Academy, 572 M. Holloway Road, Annapolis, Maryland 21402,
X-ray Crystallographic Laboratory, Department of Chemistry, University of Minnesota,
S146C Kolthoff Hall, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, ENEA, Casaccia Research
Center, Via Anguillarese 301, 00060 Rome, Italy, and Air Force Office of Scientific Research,
4015 Wilson Boulevard, Arlington, Virginia 22203