Syntheses and structural characterization of dinuclear and tetranuclear iron(III) complexes with dinucleating ligands and their reactions with hydrogen peroxide - Research portal of Justus Liebig University Giessen:

Journal article

Syntheses and structural characterization of dinuclear and tetranuclear iron(III) complexes with dinucleating ligands and their reactions with hydrogen peroxide

Authors list: Westerheide, L; Müller, FK; Than, R; Krebs, B; Dietrich, J; Schindler, S

Publication year: 2001

Pages: 1951-1961

Journal: Inorganic Chemistry

Volume number: 40

Issue number: 8

ISSN: 0020-1669

DOI Link: https://doi.org/10.1021/ic0009371

Publisher: American Chemical Society

Abstract:
The iron(III) complexes [Fe-2(HPTB)(mu -OH)(NO3)(2)](NO3)(2). CH3OH . 2H(2)O (1), [Fe-2(HPTB)(mu -OCH3)(NO3)(2)]-(NO3)(2) .4.5CH(3)OH (2), [Fe-2(HPTB)(mu -OH)(OBz)(2)](ClO4)(2).4.5H(2)O (3), [Fe-2(N-EtOH- HPTB)(mu -OH)(NO3)(2)]-(ClO4)(NO3) . 3CH(3)OH . 1.5H(2)O (4), [Fe-2(5,6-Me-2-HPTB)(mu -OH)(NO3)(2)](ClO4)(NO3).3.5CH(3)OH .C2H5OC2H5. 0.5H(2)O (5), and [Fe-4(HPTB)(2)(mu -F)(2)(OH)(4)](ClO4)(4). CH3CN .C2H5OC2H5.H2O (6) were synthesized (HPTB = N,N,N',N'-tetrakis(2-benzimidazolylmethyl)-2-hydroxo- 1,3-diaminopropane. N-EtOH-HPTB = N,N,N',N'-tetrakis-(N''-(2-hydroxoethyl)-2-benzimidazolylmethyl) 1,3-diaminopropane, 5,6-Me-2-HPTB = N,N,N',N'-tetrakis(5,6-dimethyl-2-benzimidazolylmethyl)-2-hydroxo 1,3-diaminopropane). The molecular structures of 2-6 were established by single-crystal X-ray crystallography. Iron(II) complexes with ligands similar to the dinucleating ligands described herein have been used previously as model compounds for the dioxygen uptake at the active sites of non-heme iron enzymes. The same metastable (mu -peroxo)diiron(III) adducts were observed during these studies. They can be prepared by adding hydrogen peroxide to the iron(III) compounds 1-6. Using stopped-flow techniques these reactions were kinetically investigated in different solvents and a mechanism was postulated.

Authors/Editors

- Uni.-Prof. Dr. Siegfried Adolf Schindler

Citation Styles

Harvard Citation style: Westerheide, L., Müller, F., Than, R., Krebs, B., Dietrich, J. and Schindler, S. (2001) Syntheses and structural characterization of dinuclear and tetranuclear iron(III) complexes with dinucleating ligands and their reactions with hydrogen peroxide, Inorganic Chemistry, 40(8), pp. 1951-1961. https://doi.org/10.1021/ic0009371

APA Citation style: Westerheide, L., Müller, F., Than, R., Krebs, B., Dietrich, J., & Schindler, S. (2001). Syntheses and structural characterization of dinuclear and tetranuclear iron(III) complexes with dinucleating ligands and their reactions with hydrogen peroxide. Inorganic Chemistry. 40(8), 1951-1961. https://doi.org/10.1021/ic0009371