Noun
(chemistry) Any compound containing a I3 moiety consisting of three iodine atoms in a more or less linear configuration.
(chemistry) Any iodide of a trivalent element that contains three I ions.
Source: en.wiktionary.orgElemental iodine is slightly soluble in water, with one gram dissolving in 3450 ml at 20 °C and 1280 ml at 50 °C; potassium iodide may be added to increase solubility via formation of triiodide ions. Source: Internet
Greenwood and Earnshaw, p. 1084 Of the known trihalides, trifluoride is dark brown and decomposes above 650 °C, tetrabromide is dark-brown and decomposes above 400 °C, and triiodide is black. Source: Internet
The trichloride and tribromide disproportionate just above room temperature to give the monohalides, and thallium triiodide contains the linear triiodide anion ( Imain ) and is actually a thallium(I) compound. Source: Internet
Nitrogen triiodide is so sensitive that it can be reliably detonated by exposure to alpha radiation ; it is the only explosive for which this is true. Source: Internet
The lower oxidation states are stabilized by the larger halogens, so that the trichloride, tribromide, triiodide, and even diiodide are known. Source: Internet