Iodine chemistry in the +1 oxidation state. II. A Raman and uv–visible spectroscopic study of the disproportionation of hypoiodite in basic solutions

Autor:	J. C. Wren, J. Paquette, S. Sunder, B. L. Ford
Rok vydání:	1986
Předmět:	chemistry.chemical_classification Chemistry Organic Chemistry Iodide Inorganic chemistry chemistry.chemical_element Disproportionation General Chemistry Iodine Catalysis chemistry.chemical_compound symbols.namesake Oxidation state Basic solution symbols Spectroscopy Raman spectroscopy Iodate
Zdroj:	Canadian Journal of Chemistry. 64:2284-2296
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v86-375
Popis:	The kinetics of disproportionation of elemental iodine to iodide and iodate ions has been studied in basic aqueous media using Raman and uv–visible spectroscopy. The IO stretching vibrations for IO− and I2OH− were observed at 430 ± 2 and 560 ± 2 cm−1, respectively. The totally symmetric stretching vibration for [Formula: see text] was observed at 685 ± 2 cm−1. The Raman results indicate that I2OH− is a linear molecule with a stronger I—O bond than IO−. The rate expression at 25 °C in 1 mol dm−3 NaOH was found to be[Formula: see text]where[Formula: see text]The reaction is primarily a reaction of the iodine +1 oxidation-state species IO− and I2OH−. It proceeds through the +3 oxidation-state species [Formula: see text] The following equilibrium and rate constants were determined:[Formula: see text]
Databáze:	OpenAIRE
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