Y. Wang, X. X. Li, H. Jiang, B. W. Xia, N. Deng, Y. W. Zhu, G. P. Jin, X. M. Ni and J. B. He (2013) Two new 2p-3d-4f heterometallic coordination polymers based on 3,5-pyrazoledicarboxylic acid: synthesis, crystal structures and magnetic properties. Journal/Inorganic Chemistry Communications 35, 34-37. [In English]
Web link: http://dx.doi.org/10.1016/j.inoche.2013.05.018
Keywords: Pyrazoledicarboxylate, 3d-4f, Coordination polymer, Magnetism, COMPLEXES, LIGANDS
Abstract: Two new 2p-3d-4f heterometallic coordination polymers, [NaCuGd(pdc)(2)(H2O)(7)center dot 2H(2)O](n) (1) and [NaCuEu(pdc)(2)(H2O)(7)center dot 2H(2)O] (2), have been synthesized based on 3,5-pyrazoledicarboxylic acid (H(3)pdc). Single-crystal X-ray diffraction analysis reveals that complexes 1-2 are isostructural and both of them display an infinite two-dimensional brickwall-like layer structure consisting of three metal ions and bridged pyrazoledicarboxylate ligands. Magnetic properties of the complexes have been investigated in detail. Furthermore, free-ion approximation was used to fit the magnetic data and a good theory-experiment agreement was obtained for both 1 and 2. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.