Abstract
Three new CuII coordination polymers, [Cu2(oba)2(H2O)(DMF)]·3H2O (1), [Cu4(oba)4(DMF)4]·4H2O·DMF (2) and [Cu2(oba)(hmp)2] (3) (H2oba = 4,4′-oxybis(benzoic acid), Hhmp = 2-pyridine methanol, DMF = N,N′-dimethylformamide) were synthesized by solvothermal reactions and characterized by single-crystal X-ray diffraction. Both complexes 1 and 2 take three-dimensional (3D) three-fold interpenetrating PtS topology with 1D channels. In complex 3, Cu4 clusters were formed by the chelating hmp ligands, and then the clusters were further linked by oba ligands to form a 3D three-fold interpenetrating dia topology network. For 2, N2 sorption shows type I isotherm with BET surface areas of 562 m2 g−1 and Langmuir surface area of 747 m2 g−1, respectively. At 77 and 87 K, the hydrogen uptakes of complex 2 are 0.89 wt% and 0.57 wt%, respectively. Magnetic investigation showed the ferromagnetic coupling between CuII ions and very weak antiferromagnetic interaction between Cu4 clusters in complex 3.
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Zhang, X., Yang, Q., Zhao, J. et al. Three interpenetrated copper(II) coordination polymers based on a V-shaped ligand: Synthesis, structures, sorption and magnetic properties. Sci. China Chem. 54, 1446–1453 (2011). https://doi.org/10.1007/s11426-011-4347-2
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DOI: https://doi.org/10.1007/s11426-011-4347-2