Abstract
Herein we report on the synthesis, single crystal X-ray structure, spectroscopic and magnetic properties of [{Cu 2(tidf)(H 2O)} 2(μ-CN) 2Fe(CN) 4]·6H 2O ( 1), [Cu 2(tidf)(H 2O) 2][Ni(CN) 4] (2) and [Cu 2(tidf)(H 2O) 2][Fe(CN) 5NO]·H 2O (3) (tidf = a Robson type macrocyclic ligand obtained on condensation of 2,6-diformyl-4-methylphenol and 1,3-diaminopropane). Complex (1) is pentanuclear; two paramagnetic dicopper(II) units are linked by a hexacyanoferrate(II) ion through two cyano-bridges. All compounds exhibit extensive, three-dimensional, supramolecular structures supported by classic hydrogen bonding between the coordinated aqua ligands, water molecules and cyano groups. Magnetism as a function of the temperature of complexes 1–3 is consistent with a strong antiferromagnetism with exchange parameters 2J estimated −783(29), −913(2), −905(1), respectively.
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