PREPARATION, CHARACTERIZATION AND MOSSBAUER-SPECTRA OF THE IRON(III) COMPLEXES OF SOME DIHYDROXAMIC ACIDS AND AMINO MONOHYDROXAMIC ACIDS

FeIII complexes have been prepared from the dihydroxamic acids (CH2)n[CON(R)OH]2 (n=2, 3, 4, 6, 8; R=H, Ph, o-tolyl, p-tolyl) (H2L) and the amino monohydroxamic acids H2NCH(R)CONHOH (R=H, Me) (HL′) and XC6H4CONHOH (X=o-NH2, p-NH2) (HL″). Based on elemental analyses, molecular weight data, and electronic and i.r. spectra, the complexes have been formulated as Fe2(LH)2L2, Fe2L2O and Fe2L3 for the dihydroxamic acids, and Fe(OH)4L′2(H2O)2 and FeL″3 for the amino monohydroxamic acids. The57Fe Mossbauer spectra are discussed. © 1990 Chapman and Hall Ltd.