Alkylation of poly(4-vinylpyridine) with methyl iodide for 12 h led to synthesis of the anionite poly(N-methyl-4-vinylpyridinium iodide). Iodination of an aqueous solution of the reaction product with an equimolar quantity of iodine in ethanol produced poly(N-methyl-4-vinylpyridinium triiodide) at quantitative yield. The structure of this compound was confirmed by UV, IR, and 1 H NMR spectroscopy and potentiometric titration. The antimicrobial activities of the compounds synthesized here are presented.

A new capillary electrophoretic (CE) method was developed for the simple and selective determination of iodine in 0.5 mol l(-1) NaCl. The proposed method is based on the in-capillary derivatization of iodine with thiosulfate ions using the zone-passing technique and direct photometric detection of the iodide and tetrathionate formed. The optimal conditions for the separation and derivatization reaction were established by varying the concentration of iodine, electrolyte pH and applied voltage. The optimized separations were carried out in phosphate electrolyte (pH 6.86) using direct photometric detection at 253.7 nm. Common photometric detection absorbing anions such as Cl(-), NO(2)(-), S(2)O(3)(2-) did not give any interference. Valid calibration (r(2) = 0.994) is demonstrated in the range 16.5-198.1 mg l(-1) of iodine. The detection limit (calculated according to K. Doerffel, Statistik in der analytischen Chemie, 1990) was 11.53 mg l(-1) (by iodide peak area) and 8.45 mg l(-1) (by tetrathionate peak area). The proposed system was applied to the determination of iodine after oxidation of iodide in underground water.

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The present review summarizes the results of structural studies of organoiodine complexes. Particular emphasis is given to the role of intermolecular interactions such as halogenhalogen (I...I), hydrophobic, π-π stacking, and hydrogen bonds (C-H...I) in the formation of supramolecular iodine containing architectures. The molecular formula, size, shape, and stability of the polyhalide ion and the way of its coordination by an outer sphere cation or an organic macromolecule depend on the nature and symmetry of the cationic environment, the ability of a solvating solvent to form complexes with iodine, and the conditions of the synthesis. Efforts have been made to highlight a structural and functional variety of iodine containing complexes and estimate the prospects of using them as organic conductors, magnetic materials, liquid electrolytes, and biologically active compounds.