title: Polyoxotungstate incorporating organotriphosphonate ligands and lanthanide ions: syntheses, characterization, magnetism and photoluminescence properties.
abstract: Four structurally intriguing members of a new family of lanthanide (Ln)-containing organophosphonate-functionalized polyoxotungstates with the general formula K2[Ln(H2O)4(AsW9O33)(W2O3)(O3PCOHCH3PO3)Ln(H2O)7]2·15H2O [Ln = Ce (1Ce), Nd (2Nd), Sm (3Sm) and Eu (4Eu)] were directly isolated by controlling the reaction parameters and well established by single-crystal X-ray diffraction, PXRD analyses, IR spectra, elemental analyses, TG and EDX analyses. All the four three-dimensional frameworks consist of the S-shaped inorganic building block {[(AsW9O33)(W2O3)]2}, two organophosphonate groups {O3PCOHCH3PO3} and four Ln ions. The magnetic properties of the four compounds and the solid-state photoluminescence properties of 2Nd, 3Sm, and 4Eu were also fully investigated.
authors.affiliation: Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China. jyniu@henu.edu.cn jpwang@henu.edu.cn.
authors.forename: Ran
authors.initials: R
authors.lastname: Ban
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Sun
authors.forename: Jiawei
authors.initials: J
authors.lastname: Wang
authors.forename: Pengtao
authors.initials: P
authors.lastname: Ma
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang
authors.forename: Jingyang
authors.initials: J
authors.lastname: Niu
authors.forename: Jingping
authors.initials: J
authors.lastname: Wang