and the R 1 indices are 0.036 and 0.043. The cell of RbSm 2 Ag 3 Se 5 is 4.3223(6), 15.229(2), 17.420(3) A > and the R 1 index is 0.025. All six are closely related three-dimensional tunnel structures. Their anionic frameworks are built from LnSe 6 octahedra and MSe 4 (M β«Ψβ¬ Cu, Ag) tetrahedra. RbLn
Syntheses and Structures of the New Quaternary Compounds Ba4Nd2Cd3Se10 and Ba4Ln2Cd3S10 (Ln=Sm, Gd, Tb)
β Scribed by Yuting Yang; James A. Ibers
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 188 KB
- Volume
- 149
- Category
- Article
- ISSN
- 0022-4596
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β¦ Synopsis
The compounds Ba4Nd2Cd3Se10 and Ba4Ln2Cd3S10 (Ln β«Ψβ¬ Sm, Gd, Tb) have been synthesized at 1173 K with the use of a BaBr2/ KBr eutectic 6ux. These isostructural compounds crystallize as racemic twins in space group Cmc21 of the orthorhombic system in cells of (Ln, Q, a, b, c (A s ), T (K)
π SIMILAR VOLUMES
few studies on n Ο 1 members that have layers consisting The crystal structures of NaLnTiO 4 (Ln β«Ψβ¬ La, Nd, Sm, and of alkali-metal cations. If we consider the (A, AΠ) 2 (M, Gd) were determined by Rietveld refinements on their powder MΠ)O 4 (A and AΠ Ο alkaline-earth or rare-earth cations) X-ray di