Reaction of iron(II) with 1,2-cyclohexanedionedioxime in acid solution

Information about a decomposition of 1,2-cyclohexanedionedioxime in 0.1N acid has been presented. A spectrophotometric study of the reaction of Fe(II) with 1,2-cyclohexanedionedioxime in dilute, acetate buffered solutions containing no ammonia or amine has been reported. The ratio of 1,2-cyclohexanedionedioxime to Fe(II) was found to be 2:1 by JOB's method. The solid compound formed when an excess of 1,2-cyclohexanedionedioxime is added to more concentrated Fe(II) solutions has been studied. Analysis of the vacuum-dried solid is in agreement with the theoretical composition of the compound Fe(DH)₂.2H₂0.