'H and'9 NMR spectra were recorded on a 200-MHz AC 200 Bruker Fl'NMR spectrometer with CDC& as a solvent Chemical shifts are reported in ppm relative to TMS and CFCIS. Infrared spectra were obtained on a Perkin-Elmer 700 spectrometer. Elemental analyses were conducted by Galbraith Laboratories, Knoxville, TN.(Caution. Organic diazides are potentially explosive and should be handled with care. Adequate safety shielding should ...