Supramolecular heteropolymetallic assemblies constructed from binuclear complexes and hexacyanometallate anions. Synthesis, crystal structure and magnetic properties of [Cu2(fsal-33)(H2O)2]3[Fe(CN)6]2·8 H2O

Autor:	Ruxandra Gheorghe, Marius Andruh, Floriana Tuna, Daniel B. Leznoff, Steven J. Rettig, Gabriela Grasa
Rok vydání:	2000
Předmět:	Schiff base Ligand Inorganic chemistry Supramolecular chemistry Cationic polymerization chemistry.chemical_element General Chemistry Crystal structure Copper Catalysis chemistry.chemical_compound Crystallography chemistry Materials Chemistry Molecule Antiferromagnetism
Zdroj:	New Journal of Chemistry. 24:615-618
ISSN:	1369-9261 1144-0546
DOI:	10.1039/b000655f
Popis:	A supramolecular heteropolymetallic system, [Cu2(fsal-33)(H2O)2]3[Fe(CN)6]2·8 H2O (1), was obtained by reacting K3[Fe(CN)6] with [Cu2(fsal-33)(H2O)2](ClO4)2 (H2fsal-33 is the symmetric macrocyclic binucleating Schiff base ligand obtained by condensation of 2,6-diformyl-4-methylphenol with 1,3-propylenediamine). The crystallographic investigation of 1 reveals a complex three-dimensional structure based on hydrogen-bond interactions between the aqua ligands coordinated to the copper atoms, the water molecules, and the cyano groups arising from the hexacyanoferrate(III) anions. The cryomagnetic measurements reveal the strong antiferromagnetic interaction between the copper(II) ions within the binuclear cationic entity, and the temperature dependence of the χMT product, which is due to the first-order orbital momentum associated with low-spin Fe(III).
Databáze:	OpenAIRE
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