title: Synthesis and magnetic properties of tartrate-bridging rare-earth-containing polytungstoarsenate aggregates from an adaptive precursor [As2W19O67(H2O)](14-).
abstract: Six tartrate-bridging rare-earth-substituted polytungstoarsenates [RE2(C4H4O6)(C4H2O6)(As W9O33)]2(18-) (Ho(III) (1), Er(III) (2), Tm(III) (3), Yb(III) (4), Lu(III) (5), and Y(III) (6)) have been synthesized under conventional solution conditions. They have been further characterized by elemental analyses, X-ray powder diffraction (XRPD), IR and UV-vis spectroscopy and single-crystal X-ray diffraction. Preliminary variable-temperature magnetic susceptibility measurements indicate that 1-4 exhibit antiferromagnetic coupling.
authors.affiliation: Henan Key Laboratory of Polyoxometalate, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China. jpwang@henu.edu.cn jyniu@henu.edu.cn.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Sun
authors.forename: Suzhi
authors.initials: S
authors.lastname: Li
authors.forename: Pengtao
authors.initials: P
authors.lastname: Ma
authors.forename: Jingping
authors.initials: J
authors.lastname: Wang
authors.forename: Jingyang
authors.initials: J
authors.lastname: Niu
mesh_terms: D008280:Magnetics; D008674:Metals, Rare Earth / Q000737:chemistry*; D013057:Spectrum Analysis; D013644:Tartrates / Q000737:chemistry*; D017973:Tungsten Compounds / Q000737:chemistry*
chemical_list: D008674:Metals, Rare Earth; D013644:Tartrates; D017973:Tungsten Compounds