iodate: Definition from Answers.com

Space-filling model of the iodate anion, IO3−

Space-filling model of the iodate anion, IO₃⁻

An iodate is a salt of iodic acid^[1]. In the iodate anion, iodine is bonded to three oxygen atoms and the molecular formula is IO₃⁻. The molecular geometry of iodate is trigonal pyramid.

Iodate can be obtained by reducing periodate with a thioether. The biproduct of the reaction is a sulfoxide.^[2]

Iodates are a class of chemical compounds containing this group. Examples are sodium iodate (NaIO₃), silver iodate (AgIO₃), and calcium iodate (Ca(IO₃)₂). Iodates resemble chlorates with chlorine instead of iodine.

In acid conditions, iodic acid is formed. Potassium hydrogen iodate (KH(IO₃)₂) is a double salt of potassium iodate and iodic acid and an acid as well. Iodates are used in the Iodine clock reaction.

References

^ Merium-Webster definition
^ Qiu, Chao; Sheng Han; Xingguo Cheng; and Tianhui Ren (2005). "Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis". Industrial & Engineering Chemistry Research 44 (11): 4151-4155. DOI:10.1021/ie048833b. Retrieved on 2007-05-03. “Thioethers can be oxidized to sulfoxides by periodate, and periodate is reduced to iodate”

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