Elemental analyses were performed by Schwarzkopf Microanalytical Laboratories, Woodside, NY Where analyses are indicated only by symbols of the elements, they are within f0. 4% of the theoretical values. Ir spectra in KBr were obtained with a Perkin-Elmer 257 spectrophotometer. Nmr spectra in CDC13 (Mersi) were obtained with a Varian T-60 instrument at ambient temperature in approximately 10% solutions. All spectra were ...