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Synthesis of a New Schiff Base-like Trinucleating Ligand and its Copper, Vanadyl, and Iron Complexes : Influence of the Bridging Ligand on the Magnetic Properties

Title data

Weber, Birgit ; Kaps, Eike ; Dankhoff, Katja:
Synthesis of a New Schiff Base-like Trinucleating Ligand and its Copper, Vanadyl, and Iron Complexes : Influence of the Bridging Ligand on the Magnetic Properties.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 643 (November 2017) Issue 21 . - pp. 1593-1599.
ISSN 1521-3749
DOI: https://doi.org/10.1002/zaac.201700277

Abstract in another language

A trinucleating Schiff base-like ligand and its copper(II), vanadyl(IV), iron(II), and μ-oxido iron(III) complexes were synthesized and characterized in detail. In the case of the hexanuclear iron(III) complex single crystals suitable for X-ray structure analysis were obtained. For the trinuclear complexes, the m-phenlylene linkage of the phloroglucinol unit determines the magnetic exchange interactions. For the copper complex weak antiferromagnetic interactions are observed, whereas the corresponding trinuclear vanadyl complex shows weak ferromagnetic exchange interactions. A competition between superexchange interactions and spin-polarization due to differences in the symmetry of the magnetic orbitals is made responsible for this observation. In the case of the hexanuclear iron(III) complex the exchange interactions via the μ-oxido bridge dominate leading to strong antiferromagnetic interactions. The corresponding iron(II) complex is a pure high-spin complex.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Schiff base ligand; Copper; Iron; Vanadyl; Magnetic properties
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry IV > Chair Anorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry IV
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 15 Nov 2017 09:53
Last Modified: 15 Nov 2017 09:53
URI: https://eref.uni-bayreuth.de/id/eprint/38960