Syntheses and crystal structures of rare earth basic nitrates hydrates

Rare earth basic nitrate hydrates (LnBN) of the general formula [Ln 6(μ 6–O)(μ 3–OH) 8(H 2O) 12(η 2–NO 3) 6](NO 3) 2· xH 2O, (Ln = Y, Sm, Eu, Gd. Tb, Dy, Ho, Er, Tm, Yb, Lu; x = 3, 4, 5, 6) exist at least in seven different structure types (A I–D). The present paper describes and discusses their syn...

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Bibliographic Details
Published in:Journal of alloys and compounds 2009-07, Vol.481 (1), p.116-128
Main Authors: Giester, Gerald, Žák, Zdirad, Unfried, Peter
Format: Article
Language:English
Subjects:
Chemical synthesis
Crystal growth
Crystal structure
Rare earth compounds
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Summary:Rare earth basic nitrate hydrates (LnBN) of the general formula [Ln 6(μ 6–O)(μ 3–OH) 8(H 2O) 12(η 2–NO 3) 6](NO 3) 2· xH 2O, (Ln = Y, Sm, Eu, Gd. Tb, Dy, Ho, Er, Tm, Yb, Lu; x = 3, 4, 5, 6) exist at least in seven different structure types (A I–D). The present paper describes and discusses their synthesis and structure determination. The basal building unit, common to all these compounds, is a [Ln 6(μ 6–O)(μ 3–OH) 8(H 2O) 12(η 2–NO 3) 6] 2+ cluster of idealized symmetry −32/ m. The stoichiometry is completed by non-coordinated (NO 3) 1− anions and H 2O molecules in interstices.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2009.03.118