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Dichlorine hexoxide

Dichlorine hexoxide is the chemical compound with the molecular formula or , which is correct for its gaseous state. However, in liquid or solid form, this chlorine oxide ionizes into the dark red ionic compound chloryl perchlorate or dioxochloronium(V) perchlorate , which may be thought of as the mixed anhydride of chloric and perchloric acids. This compound is a notable perchlorating agent.

Molecular structure

It was originally reported to exist as the monomeric chlorine trioxide in gas phase, but was later shown to remain an oxygen-bridged dimer after evaporation and until thermal decomposition into chlorine perchlorate, , and oxygen. The compound was then rediscovered.

It is a dark red fuming liquid at room temperature that crystallizes as a red ionic compound, chloryl perchlorate, . The red color shows the presence of chloryl ions. Thus, chlorine's formal oxidation state in this compound remains a mixture of chlorine(V) and chlorine(VII) both in the gas phase and when condensed; however by breaking one oxygen-chlorine bond some electron density does shifts towards the chlorine(VII).

Properties

is diamagnetic and is a very strong oxidizing agent. Although stable at room temperature, it explodes violently on contact with organic compounds It is a strong dehydrating agent: :

Many reactions involving reflect its ionic structure, , including the following:

: : : :

It reacts with gold to produce the chloryl salt : : Several other transition metal perchlorate complexes are prepared using dichlorine hexoxide.

Nevertheless, it can also react as a source of the radical: :

Synthesis

: (under ultraviolet light)

References

References

  1. (1998). "Inorganic perchlorato complexes". Coordination Chemistry Reviews.
  2. C. F. Goodeve, F. A. Todd. (1933). "Chlorine Hexoxide and Chlorine Trioxide". Nature.
  3. Lopez, Maria. (1990). "Physicochemical properties of chlorine oxides. 1. Composition, ultraviolet spectrum, and kinetics of the thermolysis of gaseous dichlorine hexoxide". J. Phys. Chem..
  4. (1994). "Chlorine Trioxide: Spectroscopic Properties, Molecular Structure, and Photochemical Behavior". Angew. Chem. Int. Ed..
  5. Mary Eagleson. (1994). "Concise encyclopedia chemistry". Walter de Gruyter.
  6. [[Harry Julius Emeléus]], Alan George Sharpe. (1963). "Advances in Inorganic Chemistry and Radiochemistry". Academic Press.
  7. Cunin, Frédérique. (2002). "First Anhydrous Gold Perchlorato Complex: ClO2Au(ClO4)4. Synthesis and Molecular and Crystal Structure Analysis". Inorganic Chemistry.
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chlorine-oxides acidic-oxides perchlorates chloryl-compounds chlorine(v)-compounds chlorine(vii)-compounds
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