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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/24932

    Title: Dimeric iron(III) complexes with salicylaldimine ligands: structures, magnetic properties, and activity of H2O2 disproportionation
    Authors: 魏和祥;Wei, Ho-hsiang;Chen, Wei-hsian;Lee, Gene-hsiang;Wang, Yu
    Contributors: 淡江大學化學學系
    Keywords: Dimeric iron(III) complexes;Salicylaldimine ligands;H2O2 disproportionation
    Date: 2001-03-30
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: The preparations, characterizations, structures, magnetic properties and catalase-like activities of four new alkoxy bridged dimeric five-coordinate iron(III) salicylaldimine complexes, [FeL1Cl]2 (1) (H2L1=N-(3-hydroxypropyl)(5-bromosalicylaldimine)), [FeL2Cl]2 (2) (H2L2=N-(3-hydroxypropyl)(3-methoxysalicylaldimine)), [FeL3Cl]2 (3) (H2L3=N-(3-hydroxypropyl)(4-diethylaminosalicylaldimine)), and [FeL4Cl]2 (4) (H2L4=N-(3-hydroxypropyl)(3,5-diiodosalicyaldimine)) are reported. The crystal structure of complexes 1–3 show an alkoxy bridged dimeric iron(III) complex, which occupies a site of inversion symmetry, and each iron atom is five-coordinate with square-pyramidal arrangements. Mössbauer spectra reveal the presence of high-spin iron(III) ions in complexes 1–4. The magnetic susceptibility (300–2 K) indicate an antiferromagnetic interaction between the two oxygen-bridged iron(III) ions with J=−17.5, −12.40, −19.0 and −21.0 cm−1 for the complexes of 1–4, respectively. The H2O2 disproportionation of complexes 1–4 in acetonitrile at 25°C show the rate law of kobs[H2O2]2[complex].
    Relation: Polyhedron 20(6), pp.515-521
    DOI: 10.1016/S0277-5387(00)00656-2
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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