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Synthesis and properties of chloryl chloride, ClClO[sub 2]

Journal Article · · Inorganic Chemistry; (United States)
DOI:https://doi.org/10.1021/ic00038a040· OSTI ID:7017298
;  [1]
  1. Institut fuer Anorganische Chemie der Universitat, Hannover (Germany)

Halogen exchange between FClO[sub 2] and AlCl[sub 3], BCl[sub 3], or HCl afforded chloryl chloride, ClClO[sub 2], identified by IR and UV spectroscopy in noble gas matrices and in the gas phase. All six fundamental vibrations, as well as some over and combination tones of 12 isotopomers were detected for the novel chlorine oxide having C[sub s] symmetry. Use of the product rule in the symmetry class A[double prime] with vibrational frequencies of four independent isotopomers, in conjunction with experimental and ab initio results of related compounds, allowed the geometric parameters to be estimated (r(ClCl) = 222 [plus minus] 6 pm, r(ClO) = 144.0 [plus minus] 0.5 pm, [angle](ClClO) = 103.5 [plus minus] 1[degree], [angle](OClO) = 116.0 [plus minus] 0.5[degree]) and a force field to be calculated. The UV spectrum shows two maxima at 231 and 296nm with [sigma] = 1.3 [times] 10[sup [minus]17] and 1.5 [times] 10[sup [minus]17] cm[sup 2]/molecule, respectively. Photolysis of matrix-isolated ClClO[sub 2] resulted in the isomers ClOClO and ClOOCl. In the gas phase ClClO[sub 2] decomposes into ClO[sub 2] and chlorine, but it can also be formed by reacting Cl atoms with ClO[sub 2]. At room temperature and partial and total pressure of 1 and 4 mbar, respectively, the half-life of ClClO[sub 2] is 1 min. The role of ClClO[sub 2] in stratospheric chemistry is discussed in relation to possible reaction schemes.

OSTI ID:
7017298
Journal Information:
Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:12; ISSN 0020-1669; ISSN INOCAJ
Country of Publication:
United States
Language:
English