Matrix infrared spectroscopic studies of the photo-dissociation at 266 nm of ClNO2 and of ClONO

Abstract Detailed infrared spectroscopic studies of the photo-dissociation at 266 nm of ClNO 2 trapped in argon matrices with subsequent experiments conducted with a xenon lamp at λ>360 nm are reported. Formation of cis and trans ClONO in equilibrium with ClNO 2 is observed after irradiation at 266 nm. At λ>360 nm the transformation of trans ClONO into cis ClONO occurs. On prolonged photolysis at 266 nm, ClONO dissociates into ClON and O ( 1 D ) atom and into ClO+NO as evidenced in reactive matrices (solid oxygen and nitrogen).