From Wikipedia, the free encyclopedia

Diiodosyl sulfate  is an inorganic compound, a basic salt of iodine and sulfuric acid with the formula (IO) 2 SO 4, yellow crystals. [1]

Synthesis

  • Reaction of iodic and sulfuric acids :

2HIO3 + H2SO4 = (IO)2SO4 + O2 + 2H2O

  • Passing ozonized oxygen through a solution of iodine in sulfuric acid:

I2 + 3O3 + H2SO4 = (IO)2SO4 + 3O2 + H2O

Physical properties

Diiodosyl sulfate forms yellow hygroscopic crystals and is poorly soluble in cold water. [2]

It dissolves and can be recrystallized in concentrated sulfuric acid.

Chemical properties

  • Under the influence of atmospheric moisture, Diiodosyl sulfate hydrolyzes with the release of iodine, iodic and sulfuric acids.
  • Decomposes when heated: [3]

4(IO) 2 SO 4 → 2I2O5 + 2I2 + 4SO3 + O2

  • Reacts with sulfur(VI) oxide :

(IO) 2 SO 4 + 2SO3 → I2(SO4)3

  • With concentrated sulfuric acid it forms an acidic salt:

(IO) 2 SO 4 + H2SO4 = 2IOHSO4


References

  1. ^ Gillespie, R. J.; Senior, J. B. (July 5, 1964). "Cations and Oxy Cations of Iodine. II. Solutions of Iodosyl Sulfate, Iodine Dioxide, and Iodic Acid-Iodine Mixtures in Sulfuric Acid and Dilute Oleum". Inorganic Chemistry. 3 (7): 972–977. doi: 10.1021/ic50017a010 – via CrossRef.
  2. ^ "Chemistry of inorganic sulfonates and sulfates of polyvalent iodine". Russian Chemical Reviews 66. 1997.
  3. ^ Dasent, W. E.; Waddington, T. C. (January 1, 1960). "670. Iodine oxygen compounds. Part II. Iodosyl and related compounds". Journal of the Chemical Society (Resumed) (0): 3350–3356. doi: 10.1039/JR9600003350 – via pubs.rsc.org.

From Wikipedia, the free encyclopedia

Diiodosyl sulfate  is an inorganic compound, a basic salt of iodine and sulfuric acid with the formula (IO) 2 SO 4, yellow crystals. [1]

Synthesis

  • Reaction of iodic and sulfuric acids :

2HIO3 + H2SO4 = (IO)2SO4 + O2 + 2H2O

  • Passing ozonized oxygen through a solution of iodine in sulfuric acid:

I2 + 3O3 + H2SO4 = (IO)2SO4 + 3O2 + H2O

Physical properties

Diiodosyl sulfate forms yellow hygroscopic crystals and is poorly soluble in cold water. [2]

It dissolves and can be recrystallized in concentrated sulfuric acid.

Chemical properties

  • Under the influence of atmospheric moisture, Diiodosyl sulfate hydrolyzes with the release of iodine, iodic and sulfuric acids.
  • Decomposes when heated: [3]

4(IO) 2 SO 4 → 2I2O5 + 2I2 + 4SO3 + O2

  • Reacts with sulfur(VI) oxide :

(IO) 2 SO 4 + 2SO3 → I2(SO4)3

  • With concentrated sulfuric acid it forms an acidic salt:

(IO) 2 SO 4 + H2SO4 = 2IOHSO4


References

  1. ^ Gillespie, R. J.; Senior, J. B. (July 5, 1964). "Cations and Oxy Cations of Iodine. II. Solutions of Iodosyl Sulfate, Iodine Dioxide, and Iodic Acid-Iodine Mixtures in Sulfuric Acid and Dilute Oleum". Inorganic Chemistry. 3 (7): 972–977. doi: 10.1021/ic50017a010 – via CrossRef.
  2. ^ "Chemistry of inorganic sulfonates and sulfates of polyvalent iodine". Russian Chemical Reviews 66. 1997.
  3. ^ Dasent, W. E.; Waddington, T. C. (January 1, 1960). "670. Iodine oxygen compounds. Part II. Iodosyl and related compounds". Journal of the Chemical Society (Resumed) (0): 3350–3356. doi: 10.1039/JR9600003350 – via pubs.rsc.org.


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