660. Reactions of nitrosyl chloride. Part II

Nitrosyl Chloride.

“…Chlorides other than sodium chloride have been used in the preparation of nitrosyl chloride and nitrogen tetroxide has often been used in place of nitric acid. Calcium chloride (125, 126), ammonium chloride (74), arsenic trichloride (179, 360), aluminum chloride (360), boron trichloride (377), stannic chloride (377, 470, 471, 472), and titanous chloride (377) have all given nitrosyl chloride when treated with nitric acid or nitrogen tetroxide.…”

“…Mercury reacts readily with nitrosyl chloride at room temperature liberating nitric oxide (35,74,96,125,126,173,174,198,377,454). HgCl2-NOCl has been made from mercuric chloride (19,170,376) and from mercurous chloride (170, 376) by reaction with nitrosyl chloride at about -20°C.…”

“…does not appreciably attack the metal, but a considerable amount of ammonium chloride is formed, the palladium catalyzing the reaction between hydrogen and nitrosyl chloride. Palladium strip in liquid nitrosyl chloride at room temperature forms a product that apparently is a mixture of PdCl2-2NOCl and PdCl2-2NO (377).…”

“…Dry nitrosyl chloride does not attack platinum at room temperature (11). At higher temperatures, or if wet, nitrosyl chloride slowly corrodes the metal (35,125,126,198,377,416,417,458,476,477). The very stable PtCh-2NOCl is formed.…”

“…Boron trichloride and nitrogen tetroxide form BCla-NOCl (179). Nitrosyl chloride is probably an intermediate, since the same product has also been formed by direct combination of boron trichloride and nitrosyl chloride (377).…”