Summary
Cyclopropanecarbohydroxamic acid (CPAH) and cyclohexylacetohydroxamic acid (CHAH) were synthesized, characterized and their pK a's determined spectro-photometrically as 9.80 and 9.85, respectively, at 25 °C and in buffers of 0.1 mol dm−3 ionic strength (I). A spectroscopic investigation of their reactions with FeIII in aqueous solutions revealed the sole formation of the 1:3 complexes at equilibrium. Stability constants (log β 3 at 25 °C and I = 0.1 mol dm−3 are 34.80 and 34.22 for [Fe(CPA)3] and [Fe(CHA)3], respectively. Spectral and magnetic studies of the isolated complexes indicate octahedral coordination via the O atoms of the hydroxamate group.
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Nwabueze, J.N. Complexes of iron(III) with cyclopropanecarbo- and cyclohexyl-acetohydroxamic acids. Transition Met Chem 21, 258–261 (1996). https://doi.org/10.1007/BF00165979
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DOI: https://doi.org/10.1007/BF00165979