Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce2Ir3Sb4, La2Ir3Sb4, and Ce2Rh3Sb4
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Raul Cardoso-Gil
Abstract
The antimonides Ce2Ir3Sb4, La2Ir3Sb4, and Ce2Rh3Sb4 were synthesized by solid state reaction from the elements. The crystal structures of these compounds were determined from single crystal X-ray diffraction data. Ce2Ir3Sb4 crystallises in a new structure type in the space group Pnma (no. 62) with a = 16.1510(8) Å, b = 4.5600(3) Å, c = 10.9463(5) Å. La2Ir3Sb4 and Ce2Rh3Sb4 crystallise in the Ce2Ir3Sb4 structure type as well with a = 16.2659(10) Å, b = 4.5896(3) Å, c = 10.9996(7) Å) and a = 16.2293(8) Å, b = 4.5604(2) Å, c = 10.9804(5) Å, respectively. The four- and five-bonded transition metal atoms and three- and four-bounded Sb atoms form a 3D-network with the rare-earth metal embedded in its cavities, resembling the topology of Ca in the CaBe2Ge2 or Th in ThCr2Si2 type. Magnetic susceptibility and X-ray absorption near edge spectroscopy data indicate a stable trivalent state for Ce in the Ce2Ir3Sb4 compound.
© by Oldenbourg Wissenschaftsverlag, Dresden, Germany
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Artikel in diesem Heft
- Structural relationships of BaGe5 to clathrate I and II
- Structural ordering principles in quasi one-dimensional Wigner crystals of the series Na1+xCuO2 (0 ≤ x ≤ 1)
- Syntheses, crystal structures, magnetic properties and vibrational spectra of nitridoborate-halide compounds Sr2[BN2]Br and Eu2[BN2]X (X = Br, I) with isolated [BN2]3– units
- Temperature-dependent neutron diffraction on TiI3
- High-pressure synthesis of rare-earth metal disulfidesand diselenides LnX2 (Ln = Sm, Gd, Tb, Dy, Ho, Er and Tm; X = S, Se)
- Synthesis, crystal structure and spectroscopic properties of Y3O2Cl[SeO3]2 : Eu3+
- Crystal structure, chemical bonding and magnetic properties of the new antimonides Ce2Ir3Sb4, La2Ir3Sb4, and Ce2Rh3Sb4
- New rod packings, polyhedra, and virus structures
- Topological modeling of reconstructive phase transitions through periodic hyperbolic surfaces: the β-quartz to keatite type transition
- On the continuous transformations between genus-3 minimal surfaces approximants
- Periodic nodal surfaces and exponential scale
- Periodic Space Partitioners (PSP) and their relations to Crystal Chemistry
