High-pressure/high-temperature synthesis of a new polymorphic series of lanthanoid cadmium borates, LnCdB6O10(OH)3 (Ln = Sm–Er)
Author:
Teichtmeister Tobias A.1, Bernhart Alexander Hugo1, Wurst Klaus1, Heymann Gunter1, Huppertz Hubert1
Affiliation:
1. Department of General, Inorganic and Theoretical Chemistry , University of Innsbruck , Innrain 80–82, 6020 , Innsbruck , Austria
Abstract
Abstract
We report on the synthesis, structure determination, and characterization of a new series of compounds LnCdB6O10(OH)3 (Ln = Sm–Er). Syntheses were carried out in a Walker-type multianvil device at 7 GPa and 650 °C. Structure determinations revealed the coexistence of an orthorhombic and a monoclinic polymorph, depending on the ionic radius of the lanthanoid cation. The orthorhombic structural variants crystallize non-centrosymmetrically in the space group Pna21 (no. 33), while the monoclinic modifications crystallize in space group P21/c (no. 14). Both modifications display a layered crystal structure built up by a repeating [B6O13]8− building block as their main structural feature.
Publisher
Walter de Gruyter GmbH
Reference65 articles.
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