Coordination-Complexes of Iron(Iii) with 3-Hydroxy-2(1h)-Pyridinone, 2,3-Dihydroxybenzoic Acid and 3,4-Dihydroxybenzoic Acid - Preparation and Characterization in the Solid-State
Loading...
Date
Authors
Kamariotaki, M.
Karaliota, A.
Stabaki, D.
Bakas, T.
Papaefthymiou, V.
Perlepes, S. P.
Hadjiiiadis, N.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Type
Type of the conference item
Journal type
peer reviewed
Educational material type
Conference Name
Journal name
Transition Metal Chemistry
Book name
Book series
Book edition
Alternative title / Subtitle
Description
The synthesis and study of a number of new iron(III) complexes of the ligands 3-hydroxy-2(1H)-pyridinone (3,2-opoH), 2,3-dihydroxybenzoic acid (2,3-dhbH3) and 3,4-dihydroxybenzoic acid (3,4-dhbH3) are described. These complexes have the formulae [Fe(3,2-OPO)2Cl]-Pr(n)OH, K[Fe(2,3-dhbH)2(H2O)2], [Fe(2,3-dhb)(H2O)2], K[Fe-(3,4-dhbH)2(H2O)2], [Fe(3,4-dhb)(H2O)2] and K6[Fe(3,4-dhb)3].3H2O. The complexes were characterized by elemental analyses. X-ray powder patterns, t.g.a./d.t.g. techniques, magnetic susceptibilities and spectroscopic (u.v.-vis., i.r. and variable-temperature Fe-57-Mossbauer) studies. Monomeric octahedral structures are assigned for the 1:2 2,3-dhbH-2- CoMplex and the 1:3 3,4-dhb3-compound. Dinuclear and/or oligonuclear structures are tentatively proposed for the remaining complexes in the solid state. In [FeL(H2O)2] (L3- = 2,3-dhb3- or 3,4-dhb3-), iron(III) appears to be 5-coordinate. Both oxygens of 3,2-opo- participate in coordination, while the dihydroxybenzoato ligands exhibit various coordination modes, depending mainly on the positions of the hydroxy groups, their anionic charge and the ligand:metal molar ratio used.
Description
Keywords
iron-transport compounds, structure stability relationships, nuclear-magnetic-resonance, ion sequestering agents, humic-like models, copper(ii) complexes, crystal-structure, ferric enterobactin, thermal-properties, metal-ions
Subject classification
Citation
Link
<Go to ISI>://A1994ND73900027
http://www.springerlink.com/content/3lv1n3n11v62233x/fulltext.pdf
http://www.springerlink.com/content/3lv1n3n11v62233x/fulltext.pdf
Language
en
Publishing department/division
Advisor name
Examining committee
General Description / Additional Comments
Institution and School/Department of submitter
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών