Iodine mono-chloride

Therefore, the amount of iodine, in grams, absorbed by 100 grams of the acid, is, for these three acids, respectively, 90.07, 181.42, 274.1. These numbers are known as the iodine values, also as, the Hubl, or Wijs numbers, from the names of men who devised the two most accurate methods of determination. In practice, iodine is used more often than bromine. The form in which the iodine is used is that of iodine mono-chloride, ICl, or iodine tri-chloride, ICI3. The first is made by mixing a solution of iodine and mercuric chloride,... 

HgCh + I2 ----------> HgCII + ICl Iodine mono-chloride, (Hiibl). 

The iodine mono-chloride solution is the Hiibl solution, the iodine trichloride solution, is the Wijs solution. In either case, the exact... 

Iodoanthranilic acid has been prepared by the reduction of 2-nitro-s-iodobenzoic acid, by treatment of anthranilic add with iodine in potassium hydroxide solution, by treatment of the anhydride of s-hydroxymercurianthranilic acid with iodine in aqueous potassium iodide solution, and by iodination of anthranilic acid in glacial acetic acid solution with iodine mono-chloride. ... 

Hence, calculate the number of moles of unreactcd iodine mono-chloride. 

Just as certain chlorides are found to behave as useful solvents for the formation of chloro-complexes, bromo-complexes are formed in solutions of the corresponding bromides. The solvent behaviour of (for example) molten iodine mono-bromidei53 molten arsenic(III) bromide 54-156 aluminium (III) bromidei " or molten mercury(II) bromide -i has been described the chemistry in such solutions has been briefly re vie wed s 123,124 Hydrogen bromide is very similar, but has been discussed separately in this presentation as a protonic acceptor solvent (chapter IV). 

Lewis acid catalyst is normally required when ammonium polyhalides are used, although recourse does not have to be made to strong acids, such as aluminium trichloride. Bromination and iodination reactions are normally conducted in acetic acid in the presence of zinc chloride [32], but chlorination using the ammonium tetrachloroiodate in acetic acid does not require the additional presence of a Lewis acid [33]. Radical chlorination of toluenes by benzyltrimethylammonium tetrachloroiodate in the presence of AIBN gives mixtures of the mono-and dichloromethylbenzenes [34], Photo-catalysed side-chain chlorination is less successful [35], Radical bromination using the tribromide with AIBN or benzoyl peroxide has also been reported [36, 37],... 

The orientation of addition of iodine chloride to butadiyne, however, corresponds to an electrophilic attack. A study of the kinetics of bromination of various mono- and dialkyl-substituted butadiynes has been interpreted in terms of an electrophilic mechanism . The observed rates increased with increasing inductive electron-releasing power of the substituents. However, the effects are small, and under the conditions used (two-fold excess of hydrocarbon) it seems likely that significant polybromination occurred . Marked catalysis by bromide ion was observed and interpreted in terms of electrophilic attack by bromine on a complex of acetylene with Br ... 

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