MIXED-LIGANDS μ 3 -OXO TRINUCLEAR CARBOXYLATES [Fe 3 O(CH 2 BrCOO) 1.5 (CH 2 ClCOO) 4.5 (H 2 O) 3 ]Br 0.75 Cl 0.25 5H 2 O and [Fe 3 O(BrCH 2 COO) 6 (H 2 O) 3 ] NO 3 ⋅ 2.63H 2 O
Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
Academia de Știinițe a Moldovei
Abstract
Two novel μ3-oxo-centered carboxylate-bridged triiron complexes [Fe3O(BrCH
2COO)6(H2O)3]NO3·2.63H2O (1) and Fe3O(CH2BrCOO)1.5(CH2ClCOO)4.5(H2O)3]Br0.75Cl0.25 5H2O (2) were synthesized and their structures were characterized by X-ray crystallography. The opportunity of mixed-ligand complex formation in iron(III)-bromoacetic acid system was shown. The fi rst co-ordination sphere of the iron atom in compound
2 includes two different carboxylate anions, CH2BrCOO- and CH2ClCOO- in the capacity of syn-syn- bidentate-bridged ligands, while Br- and Cl- anions being in the ratio 1:1, formulate the external sphere of the complex. The IR spectra, thermic analysis and magnetic properties of complexes were studied.
Description
Keywords
mixed-ligands complexes, Iron(III) carboxylates, crystal structure, magnetic properties
Citation
SHOVA, S., LAZARESCU, A. et al. Mixed-ligands μ3-oxo trinuclear carboxylates [Fe3O(CH2BrCOO)1.5(CH2ClCOO)4.5(H2O)3]Br0.75Cl0.25 5H2O and [Fe3O(BrCH2COO)6(H2O)3] NO3⋅2.63H2O. In: Cemistry Journal of Moldova. 2008, nr.2, pp. 86-94. ISSN 1857-1727.