Three-Dimensional 3d−4f Polymers Containing Heterometallic Rings: Syntheses, Structures, and Magnetic Properties
Inorganic Chemistry2007Vol. 46(21), pp. 8454–8456
Citations Over TimeTop 10% of 2007 papers
Yan Ouyang, Wei Zhang, Na Xu, Gong‐Feng Xu, Dai‐Zheng Liao, Kazuyoshi Yoshimura, Shi‐Ping Yan, Peng Cheng
Abstract
Two novel three-dimensional (3D) 3d-4f mixed complexes [Ln(H(2)O)(4)][Ni(2)TTHA(SCN)(2)].H(3)O+ [Ln = Pr (1), Ce (2); H(6)TTHA = triethylenetetraaminehexaacetic acid], based on the building blocks of [Ni(2)TTHA(SCN)(2)](4-), were synthesized and characterized by X-ray crystal diffraction and magnetic properties. The single-crystal structures show that these complexes form a 3D framework, comprised of an unusual infinite one-dimensional chain based on heterometallic Ln2Ni2 rings. The temperature-dependent magnetic susceptibilities were analyzed by an approximate model, leading to g = 2.06. Delta = 2.83, zJ' = -0.6 cm-1 for complex 1 and g = 2.07, Delta = 1.00, zJ' = -0.5 cm(-1) for complex 2.
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