4.1 4.8 4.5 a All melting points were determined with the l'ershberg apparatus, Id. Eng. Ckem., Anal. Ed., 8,312 (1936). b The microanalyses were performed by Arlington Laboratories, Fairfax, Va., except where noted. Krohnke, Ber., 69, 933 (1936); mp 208- 209"(dec.). No analysis reported. No analysis reported. e Based on bromide.'Based on iodide. g Nitrogen analysis on this compound is: Calcd. fox N, 10.4; found, 10.4. A ...