Abstract
AbstractThe cerium phosphido‐platinide Ce2Pt8P is synthesized by direct reaction of the elements. The crystal structure is considered as an intergrowth of structural segments with the compositions CePt5 (CaCu5‐like) and CePt3P (CePt3B‐like) along [010]. The Pt–Pt and Pt–P distances in the anionic framework are close to the ones found in CePt5 and CePt4P2. Analysis of the chemical bonding in real space reveals the presence of a Pt–P covalently‐bonded polyanion [Pt8P] (consisting of PtPt6 trigonal prisms and PPt5 tetragonal pyramids). Cerium cations are located in the voids of the polyanionic framework. Together with CePt5 (m = 0, n = 1), Ce2Pt8P (m = 1, n = 1) forms a homological series Cen+mPt5n+3mPm. The hypothetical “CePt3P” (m = 1, n = 0) with CePt3B‐type crystal structure is not known to date.
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