Novel aluminide CePt3−xAlx of the CeNi3 type structure, with 0.61 < x < 0.81

Abstract This article reports on the synthesis and crystal structure of CePt 3−x Al x (x = 0.73). According to single crystal diffraction data, CePt 2.27(1) Al 0.73(1) compound crystallizes with the CeNi 3 – type, space group P 6 3 / mmc , lattice parameters: a  = 5.5634(5) A, c  = 16.6658(13) A, Z = 6, R 1  = 0.033 for 385 reflections (I > 2σ(I)). The CePt 3−x Al x compound possesses homogeneity range extends a 0.61