Preparation of cyanogen fluoride
1.3 g fine powdered silver fluoride and 1.5 g cyanogen iodide is placed to a glass tube about 50 cm long and 2-5 cm diameter wide. After removing air the tube is sealed off and heated in a furnace to 220° C for 2-3 hours. After cooling, the tube is immersed in liquid nitrogen and the reaction products allowed to condense. The tube is then opened and the cyanogen fluoride distilled at — 70° C in a freezing mixture of acetone and dry ice. The yield of cyanogen fluoride is 20-25%. Cyanogen fluoride is a colorless gas, and on cooling to a low temperature it forms a white mass which sublimes at — 72° C.
The war gases chemistry and analysis, by M. Sartory, 187-188, 1939
Cyanogen fluoride, 1495-50-7, carbononitridic fluoride, AC1L39RB, CPPKAGUPTKIMNP-UHFFFAOYSA-N