Copper lanthanide selenite oxohalides with francisite structure: Synthesis and structural characteristicsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The reaction of lanthanide oxohalides with CuO and SeO2 gave the products Cu(3)Ln(SeO3)(2)O2X (Ln = lanthanide, X = Cl, Br). The oxochlorides are formed with all lanthanides, while oxobromides are formed only for Ln = La-Gd. The structures of the Cu(3)Ln(SeO3)(2)O2Cl phases for Ln = Nd (I) and Y (II) were determined by the Rietveld method. It was found that Cu(3)Ln(SeO3)(2)O2X has the structure of francisite (orthorhombic system, space group Pmmn), which does not change substantially upon the variation of the Ln(3+) radius. No similar compounds with tellurium(IV) were found.