506-78-5 iodine cyanide

Perfluoroalkylalkynes undergo unidirectional syn addition of iodine cyanide [M] (equation 43)... 

In his first experiment (1987) Zewail studied the unimolecular disintegration of iodine cyanide into iodine atom and cyano radical ICN I + CN. They managed to observe a transition state corresponding to the I-C bond breaking. The whole reaction was over in 200 fs. 

The purification of iodine.—Crude iodine contains from 75 to 90 per cent, of iodine, some iodine chloride, iodine cyanide, water, and different salts. The iodine of commerce is purified by washing it with cold water, drying by press., and subliming from heated iron retorts into udells.13 The following is a convenient way of purifying small quantities of iodine for analytical purposes 14... 

Iodoacetylenes as well as iodine cyanide are soft Lewis acids (Laurence etal. 1981), which interact with basic solvents yielding characteristic wavenumber shifts Av (C-I) (e g., for ICN relative to the wavenumber in CCI4 solutions). These shifts differ for soft solvents, with sulfur or selenium donor atoms or n systems, and hard solvents, with oxygen or nitrogen donor atoms. However, these authors have not converted this observation and their data to a solvent softness scale. In fact, if prorated values of A v (O-H), for phenol, relative to CCI4 solutions, see B0 H above, representing the hard basicity of the solvents, are subtracted, the remainder measures the solvent softness. Quantitatively,... 

As with iodine, starch forms an inclusion complex with bromine vapor.205 Depending on the starch variety, different colors are developed by the complex. Maize and wheat produce an ochre color, rice produces a light-buff color, potato and sago develop a pale-yellow color, and cassava forms a cream color.69 Iodine cyanide (and bromine)-amylose complexes are brown-black and dark brown, respectively.206 The adsorption of chlorine and iodine proceeds according to the Freundlich isotherm. A discontinuity on the Freundlich isotherm plot is reported, which possibly results from the swelling of starch granules454... 

Micellar sodium dodecyl sulfate and polyoxyethylene(23) dodecanol, on the other hand, did not significantly affect the rate constants for nucleophilic aliphatic substitution reactions between neutral reactants (equations 39 and 40) in spite of the fact that anisylthioethane (see equation 40) is appreciably solubilized by the micelles while iodine cyanide is excluded (Herries et al., 1964). 

Lang found that, in the presence of cyanide, iodine is oxidized quantitatively to iodine cyanide. The standard potential of the half-reaction... 

Potassium periodate has been used in place of iodate for various titrations involving the iodine-chloride, iodine-bromide, and iodine-cyanide end points. Reaction of periodate with iodide involves transfer of an oxygen atom rather than an electron, followed by rearrangement of the structure of the IO4" ion. In the oxidation of the active oxidant appears to be 104 . An intermediate... 

The reaction of two uncharged species, anisylthioethane and iodine cyanide... 

Diazonium salts are quite useful in organic synthesis as the diazonium group can be easily replaced by fluorine, chlorine, bromine, iodine, cyanide, hydroxy, and hydrogen. In these diazonium replacement reactions, nitrogen gas is evolved. 

Gregory et al. (16) and Humphries et al. (95) have examined the effect of A -ethylmaleimide (NEM) and BDC-OH on pig heart m-MDH and have obtained evidence in each case for the modification of two essential thiol groups per enzyme molecule. Both modifications were inhibited by coenzyme. Sensitivity of m-MDH to thiol modification has also been demonstrated by means of thyroxine, iodine cyanide, and molecular iodine, all of which cause oxidation of thiol groups accompanied by inactivation in this enzyme (103). 

---