New Lanthanide-Containing Polytungstates Derived from the Cyclic P8W48 Anion: {Ln4(H2O)28[K⊂P8W48O184(H4W4O12)2Ln2(H2O)10]13-}x, Ln = La, Ce, Pr, Nd

Autor:	Ulrich Kortz, Raymond J. Butcher, Michael T. Pope, Matthias Zimmermann, Michael H. Dickman, Elena V. Chubarova, Nebebech Belai
Rok vydání:	2007
Předmět:	Inorganic Chemistry Lanthanide Crystallography Lattice constant Chemistry Infrared spectroscopy Physical and Theoretical Chemistry Hydrothermal circulation Ion Monoclinic crystal system
Zdroj:	Inorganic Chemistry. 46:1737-1740
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic0624423
Popis:	The reaction of K28Li5H7[P8W48O184]·92H2O with early lanthanides under hydrothermal and conventional conditions yields novel structures of the molecular formula Ln4(H2O)28K6Li7[K⊂P8W48O184(H4W4O12)2Ln2(H2O)10] ≅ 57H2O, Ln = La (1), Ce (2, 2a), Pr (3), Nd (4), in which the central cavity of the precursor anion is occupied by lanthanide cations and H4W4O12 moieties. The new heteropolyanions were characterized by elemental analysis, infrared spectroscopy, 31P NMR, and X-ray crystallography. All of the crystals are monoclinic, space group C2/m, with lattice constants (A, E) a = 33.061(3), b = 30.986(3), c = 15.1649(13), β = 103.607(2), (1); a = 33.0577(16), b = 31.0562(15), c = 15.2320(7), β = 104.015(2), (2); a = 33.0577(16), b = 31.0562(15), c = 15.2320(7), β = 104.015(2), (2a); a = 33.007(2), b = 31.060(2), c = 15.2129(10), β = 104.0140(10), (3); a = 32.913(19), b = 31.155(18), c = 15.135(9), β = 103.495(11), (4); and Z = 2.
Databáze:	OpenAIRE
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