(8) Cf. KC Kennard and J. 4. VanAllan, ibid., 84, 470 (1959).(9) TP Johnston and A. Gallagher, ibid., 86, 3780 (1961).(IO) Melting points were determined with a Mel-Temp apparatuB (unless indicated otherwise) and are uncorrected; infrared absorption spectra, with a Perkin-Elmer% lode1 221 spectrophotometer.