Iodine complex chemical properties

Since the discovery of hexacarbonylvanadium(O) and hexacarbonylvanadate( 1-) by Calderazzo and co-workers in 1959 and 1960, these substances have been key precursors to a variety of vanadium compounds, including inorganic noncarbonyl species, organovanadium complexes," and other vanadium carbonyls. Neutral V(CO)6 is of special interest in that it is the only isolable 17-electron homoleptic metal carbonyl and exhibits fascinating chemical properties that are often reminiscent of iodine and classic pseudohalogens. ... 

The chemical properties of iodine trifluoride are almost unknown. IF3 forms 1 1 complexes with pyrazine or 2,2 -bipyridyl and reacts with CsF in a 1 3 molar ratio to give CS3IF6 [8]. The ligand exchange reaction of IF3 with trifluoroacetic anhydride leading to iodine(III) trifluoroacetates has been reported [17]. 

A review of the periodicity of the chemical properties of tire halides involves complexities of dealing with the four common halogens, fiuorine, chlorine, bromine, and iodine, and in some cases, more than one oxidation state of the other element, as in PCI3 and PCI5. 

Chemical properties of trialkyl REM compounds are studied very poorly. It is established that the easily proceeding hydrolysis of them leads to the quantitative splitting off of RH [43, 45]. The erbium complex reacts with iodine and mercury chloride according to the equations [45] ... 

Chemical analysis of trace iodine, in either biological or environmental samples, always encounters problems of interference from impurities and uncertainty in chemical yield of analysis. As discussed previously in Chemistry of Iodine Relevance to Radiochemical Studies and Nuclear Properties of Iodine Isotopes , the chemistry of iodine is very complex and isolation or purification of iodine from the sample is a major obstacle in a traditional chemical analysis. 

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