Abstract
A series of inorganic-organic hybrids K2Na m H9−m [{Ln(GeW11O39)2}{Cu2(bpy)2(μ-ox)}]·nH2O (bpy = 2,2-bipyridine and ox = oxalate; Ln = La, Nd, Sm, Eu, Gd; n = 19, 17, 22, 20, 19; m = 4, 4, 4, 9, 2) were isolated after reacting in a potassium acetate buffer. X-ray structural analyses show that compounds 1–5 are isomorphic and consist of [Ln(GeW11O39)2]13− polyoxoanion building blocks and oxalate-bridged dinuclear copper metalorganic complex with a 1D chain structure. The 1D chain further connects into the 3D framework by π-π interactions with neighboring bpy groups. The magnetic susceptibility data indicate that antiferromagnetic coupling between the neighboring Cu2+ ions in the structure and the rare earth ions affects magnetic property of the structure.
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Sun, P., Ma, F. & Liu, S. Inorganic-organic hybrids constructed of bis(undecatungstogermanate)lanthanates polyoxoanions and oxalate-bridged dinuclear copper complexes and their magnetic properties. Chin. Sci. Bull. 56, 2331–2336 (2011). https://doi.org/10.1007/s11434-011-4488-x
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DOI: https://doi.org/10.1007/s11434-011-4488-x