Syntheses and structures of the new quaternary compounds Ba4Nd2Cd3Se10 and Ba4Ln2Cd3S10 (Ln = Sm, Gd, Tb)

Yuting Yang*, James A. Ibers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The compounds Ba4Nd2Cd3Se10 and Ba4Ln2Cd3S10 (Ln = Sm, Gd, Tb) have been synthesized at 1173 K with the use of a BaBr2/KBr eutectic flux. These isostructural compounds crystallize as racemic twins in space group Cmc21, of the orthorhombic system in cells of (Ln, Q, a, b, c (Å), T (K)): Nd, Se, 4.3340(9), 18.667(4), 27.376(6), 115; Sm, S, 4.1907(8), 17.931(4), 26.594(5), 153; Gd, S, 4.1726(4), 17.928(2), 26.638(3), 153; Tb, S, 4.1643(8), 17.916(4), 26.581(5), 153. The corresponding R1 indices for the refined structures are 0.053, 0.029, 0.032, and 0.030. The structure comprises [Ln2Cd3Q10 ]4- layers interconnected by Ba atoms. There are LnQ6 octahedra and severely distorted CdQ4 tetrahedra in the structure. Ba4Tb2Cd3S10, which is paramagnetic, obeys the Curie-Weiss law and has an effective magnetic moment of 9.94(3) μ(B). A band gap of 3.0 eV for this material was deduced from its diffuse reflectance spectrum. (C) 2000 Academic Press.

Original languageEnglish (US)
Pages (from-to)384-390
Number of pages7
JournalJournal of Solid State Chemistry
Volume149
Issue number2
DOIs
StatePublished - 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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