Novel 1D coordination polymer based on heteronuclear {Ce2Fe2Na2O2}12+ carboxylate clusters
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MALAEŞTEAN, Iurie; ELLERN, A; KOGERLER, Paul. Novel 1D coordination polymer based on heteronuclear {Ce2Fe2Na2O2}12+ carboxylate clusters. In: Physical Methods in Coordination and Supramolecular Chemistry. XVIII, 8-9 octombrie 2015, Chişinău. Chisinau, Republic of Moldova: 2015, p. 95.
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Physical Methods in Coordination and Supramolecular Chemistry
XVIII, 2015
Conferința ""Physical Methods in Coordination and Supramolecular Chemistry""
Chişinău, Moldova, 8-9 octombrie 2015

Novel 1D coordination polymer based on heteronuclear {Ce2Fe2Na2O2}12+ carboxylate clusters


Pag. 95-95

Malaeştean Iurie1, Ellern A2, Kogerler Paul3
 
1 Institute of Chemistry,
2 Iowa State University Ames, Iowa,
3 Institute of Inorganic Chemistry RWTH Aachen University
 
Disponibil în IBN: 21 aprilie 2020


Rezumat

Recently we have explored the magnetic functionalization of polynuclear zirconium(IV) and cerium(IV) oxide coordination clusters with paramagnetic 3d ions, motivated by their structural similarities with classical polyoxometales [1,2]. Continuing these studies, we present the synthesis and structural characterization of the novel coordination polymer {[Ce2Fe2Na2O2(ib)8(bda)2]·MeCN}n (Hib = isobutyric acid; H2bda = N-butyldiethanolamine) constructed from hexanuclear clusters (Figure).figureSingle-crystal X-ray diffraction revealed that this 1D chain polymer is constructed from hexanuclear heterometal [Ce2Fe2Na2O2(ib)8(bda)2] clusters. The {Ce2Fe2Na2O2}12+ core comprises two edge-sharing CeO9 coordination polyhedra, each containing a central 4-O2– ion which bridges peripheral Fe3+ and Na+ centers. Peripheral ligation is provided by eight isobutyrate ligands. The bda2– ligands are assumed to be fully deprotonated and act as bridging ligands via one bidentate OH group between the hexanuclear clusters. Within the core, the two central Ce centers are in the oxidation state +IV, while the two of the four terminal Fe atoms are +III. Cerium and iron oxidation states are consistent with charge balance and bond parameters, this was also confirmed by bond valence sum (BVS) calculations, which are 4.849 for Ce +IV and 3.088 for Fe +III. The magnetic properties of the compound will be discussed in an upcoming full paper.