ChemInform Abstract: Syntheses and Crystal Structures of LaRhMg, CeRhMg, PrRhMg, and NdRhMg.
Abstract
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ChemInform Abstract
Single crystals of the new intermetallic rare earth compounds of title are prepared by reaction of stoichiometric mixtures of the elements at about 1500 K. LaRhMg crystallizes in the orthorhombic space group Pnma with Z = 8 (LaNiAl type structure) and CeRhMg adopts the hexagonal ZrNiAl type structure (P
2m, Z = 3). PrRhMg and NdRhMg have the TiNiSi type structure (Pnma, Z = 4). The structures consist of three-dimensional [RhMg] networks in which the rare earth atoms occupy two different types of channels.
