Evidence for the reaction of a long-lived monotypic species of iodine in the gas phase

A monotypic long-lived radioactive iodine of¹²³I or¹²⁵I resulting from the¹²³I or¹²⁵Xe(EC)¹²⁵I nuclear transformation, respectively, is described. The iodine species has the characteristics thought peculiar to the hydrated halogen that participates in certain concerted termolecular halogen-halogen reactions. The reaction leading to¹²³ICl or¹²⁵ICl in gas phase substrates of Cl₂, NOCl, HCl and CCl₄ was studied. Deceased, visiting scientist during 1972 from the Institute of Atomic Physics, Bucharest. Romania.