Crystal structure of Ce 5Rh 4 and analogous phases

Abstract

Single-crystal studies were used to establish the crystal structure of Ce 5Rh 4. It is orthorhombic, Pnma, with lattice constants a = 7.434(5), b = 14.86(1), and c = 7.604(5) A ̊ , and is isotypic with Gd 5Si 4. Lattice parameters of analogous isotypic phases La 5Rh 4, Nd 5Rh 4, Sm 5Rh 4, Gd 5Rh 4 and Ce 5Ir 4 were determined from powder X-ray diffraction data.