Nd-3(SeO3)(4)OH: the first hydroxoselenite of a rare-earth element with the Gd-3(SeO3)(4)F-type structureстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Single crystals of new neodymium hydroxoselenite Nd-3(SeO3)(4)OH are prepared by hydrothermal synthesis and studied by X-ray diffraction analysis. The compound is found to crystallize in space group P6(3)mc with the unit cell parameters a = 10.547(1) angstrom, c = 7.134(1) angstrom, Z = 2, R1 = 2.87%, and wR2 = 6.56%. The Nd-3(SeO3)(4)OH structure contains a three-dimensional framework of chains consisting of NdO9 polyhedra. Selenium(IV) atoms, whose environment includes three oxygen atoms each, are arranged along voids of the framework. The Nd-3(SeO3)(4)OH structure is isotypical to Gd-3(SeO3)(4)F. The hydroxide oxygen atom in the new structure plays the role of the F atom in Gd3(SeO3)(4)F.