Gas-phase photolysis of hydrogen iodide. Part 2.—Effect of nitric oxide at 6 and –20°C

Abstract

The investigation of the effect of nitric oxide on the photolysis of hydrogen iodide has been extended to 6 and –20°C. At these temperatures, simple inhibition by nitric oxide continued but nitrogen now appears as an important product. The nitrogen-producing reaction has the stoichiometry HNO+2NO→HNO₃+N₂ and its mechanism is confirmed as being HNO+NO⇌HNO ˙ NO HNO ˙ NO+NO→HNO₃+N₂ as has been suggested by previous workers.