Crystal structure variations in the series SrLnCuS3 (Ln = La, Pr, Sm, Gd, Er and Lu)

The crystal structures of the complex sulfides SrLnCuS3 (Ln = Sm, Gd, Er and Lu) have been determined and refined using powder X‐ray diffraction. The crystals are found to be orthorhombic, with the structure type changing consecutively in the order BaLaCuS3 → Eu2CuS3 → KZrCuS3 as the Ln3+ ionic radi...

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Published inActa crystallographica. Section C, Crystal structure communications Vol. 75; no. 5; pp. 584 - 588
Main Authors Ruseikina, Anna V, Solovyov, Leonid A, Grigoriev, Maksim V, Andreev, Oleg V
Format Journal Article
LanguageEnglish
Published Chester Wiley Subscription Services, Inc 01.05.2019
Subjects
Crystal structure
Crystals
Gadolinium
Lanthanum
Praseodymium
X-ray diffraction
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Summary:The crystal structures of the complex sulfides SrLnCuS3 (Ln = Sm, Gd, Er and Lu) have been determined and refined using powder X‐ray diffraction. The crystals are found to be orthorhombic, with the structure type changing consecutively in the order BaLaCuS3 → Eu2CuS3 → KZrCuS3 as the Ln3+ ionic radius decreases in the order La/Pr → Sm/Gd → Er/Lu. Variations of the structure parameters along the series of compounds studied are analyzed, and an effect caused by crystallochemical contraction on the stabilization of the respective structure types is demonstrated.
ISSN:0108-2701
1600-5759
DOI:10.1107/S2053229619004984