Abstract
A novel organic-inorganic hybrid polyoxometalate-based 3D framework K5H4{Ce3(H2O)9[As2W21O72(mal)2]}·20H2O (1) (mal=malic acid) has been synthesized by the metastable precursor [As2W19O67(H2O)]14−, which was further characterized by IR spectrum, thermogravimetric analysis (TGA), and X-ray single-crystal diffraction. Structural analysis revealed that 1 consists of the organo-functionalized [As2W21O72(mal)2]18− units linked together by the Ce3+ ions resulting in 3D network-like architecture. Magnetic property studies indicate that obvious antiferromagnetic interactions exist in three Ce3+ ions.
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