105206-44-8Relevant articles and documents
Production of Cl2O2 from the Self-Reaction of the ClO Radical
Molina, L. T.,Molina, M. J.
, p. 433 - 437 (1987)
The species Cl2O2 has been generated in gaseous flow system at 220-240 K by reacting Cl atoms with one of three different ClO precursors: O3, Cl2O, or OClO.The infrared spectra of the reactive mixture indicate that the least two different dimers are produced: a predominant form with bands centered at 1225 and 1057 cm-1 attributed to ClOOCl, and a second form with a band at 650 cm-1 attributed to ClOClO.The UV spectrum of the predominant form shows a maximum adsorption cross section of ca.6.5 x 1E-18 cm-1/molecule around 720 nm, with a wing extending beyond 300 nm.The implications of these results for the chemistry of the stratosphere are discussed.
An experimental study on the photochemistry and vibrational spectroscopy of three isomers of Cl2O2 isolated in cryogenic matrices
Jacobs, Jürgen,Kronberg, Marc,Müller, Holger S. P.,Willner, Helge
, p. 1106 - 1114 (2007/10/02)
Chloryl chloride, ClClO2, isolated in cryogenic matrices is subjected to photolysis, producing chlorine chlorite, ClOClO, which in turn is converted into dichlorine peroxide, ClOOCl. ClOClO is also formed by the reactions Cl + OClO and ClOCl + O. The products are identified by means of FTIR spectroscopy using 35/37Cl and 16/18O isotopic shifts, with the aid of vibrational spectra of related molecules and results of ab initio calculations. The thresholds for photodecomposition of ClOClO, ClClO2, and ClOOCl isolated in an argon matrix are above wavelengths of 665, 610, and 360 nm, respectively. Two dissociation channels are observed for both ClOClO and ClOOCl. For ClOClO they are (i) Cl + OClO, leading to ClClO2 and (ii) 2ClO, yielding ClOOCl. For ClOOCl they are (i) ClOO + Cl, resulting in Cl2 + O2, and (ii) 2ClO, giving rise to ClOClO. The observation of two photolysis paths for ClOOCl is of importance for the catalytic ozone depletion in the polar stratosphere. Irradiation of ClClO2 isolated in a neon matrix resulted in Cl2 + O2 as the only products. The UV spectra of ClClO2 in the gas phase and in a neon matrix are reinvestigated. Lower limits for the integral band strengths of ClOClO and ClOOCl are derived relative to those of ClClO2. The vibrational data of this study, in conjunction with results of submillimeter spectroscopic investigations, are used to calculate a general valence force field for ClOOCl.
ETUDE ET CARACTERISATION PAR SPECTROMETRIE INFRAROUGE DES OXYDES DE CHLORE, (ClO)2, ClO2, Cl2O4 et Cl2O3, FORMES DANS LES INTERACTIONS CHLORE-OZONE
Loupec, R. C.,Potier, J.
, p. 449 - 454 (2007/10/02)
The non photochemical reaction of (O2 + O3) (9) with Cl2 (1) at -78, -44, -40 deg C essentially gives chlorine chlorate which is characterized by ν(ClOCl) at 785 and 745 cm-1.Water traces lead to ClO2 but also to HClO3, HCl and to small quantities of other chlorine oxydes by a water catalyzed process.In the darkness and in the gas phase (p = 3 atm and t = 15 deg C) pure ozone reacts with chlorine and gives a ClO2 rich mixture containing also a high proportion of chlorine clorate with chlorine perchlorate traces; chlorine chlorate is characterized by νs(ClO2) = 1015 cm-1 νas(ClO2) = 1280 cm-1 and the two bridge vibrations νClOCl at 735 and 695 cm-1.Reactional mechanisms are proposed.Keywords: Ozone chlorine, chlorine chlorite, chlorine chlorate, chlorine perchlorate, chloric acid, I.R. spectroscopy.
