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2005
Molybdenum
I 5600
Open-Framework Polar Compounds: Synthesis and Characterization of
Polyoxometalates (C6NO2H5)2[Ln(H2O)5(CrMo6H6O24)]·0.5H 2O
19- 020 Rare-Earth
(Ln: Ce and La). — The new title compounds (III) are characterized by IR and Raman
spectroscopy, TG analysis, and single-crystal X-ray diffraction (space group Pmn21,
Z = 4). Both compounds consists of [Cr(OH)6Mo 6O18]3- Anderson-type polyoxo anions
linked by rare-earth cations to form a three-dimensional open framework with guest
pyridine-3-carboxylic acid molecules and free water molecules residing in the channels. The magnetic properties of compound (IIIa) are studied by magnetic susceptibility
measurements in the temperature range 2.0—300 K, indicating the existence of antiferromagnetic interactions. — (AN, H.; XIAO, D.; WANG*, E.; LI, Y.; WANG, X.;
XU, L.; Eur. J. Inorg. Chem. 2005, 5, 854-859; Dep. Chem., Northeast Norm. Univ.,
Changchun 130024, Peop. Rep. China; Eng.) — Schramke
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