Information AboutPeriodate |
| CATEGORIES ABOUT PERIODATE | |
| oxoanions | |
| periodates | |
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A periodate is a compound that contains this group. Note that the pronunciation is per-iodate, not period-ate. EXAMPLES
See for a bigger list. DISCUSSION Periodates include two forms. The metaperiodate ion is IO4−; the '''orthoperiodate''' ion is IO65−. Periodate compounds include metaperiodates and '''orthoperiodates'''. Usually both are called periodates. In neutral or weak acid conditions, IO4− is most common, in equilibrium with a smaller amount of H4IO6−. In basic conditions, H3IO62− is formed, plus some other ions. Like its neighbor, Tellurium , and unlike lighter halogens, iodine tends to be Hexacoordinate , and the units H''n''IO6(5−''n'')- are quite common; but in the case of iodine, Tetracoordinate units, such as IO4−, are also quite common. USES Periodates can cleave carbon-carbon bonds when both carbon atoms bear an oxygen atom, either in the form of a Hydroxyl or a Carbonyl group. This property is often utilized in molecular biochemistry for the purposes of modifying Saccharide rings, as many five- and six-membered sugars often have Vicinal Diols . |
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