title: Calcium platinum aluminium, CaPtAl.
abstract: A preliminary X-ray study of CaPtAl has been reported previously by Hulliger [J. Alloys Compd (1993), 196, 225-228] based on X-ray powder diffraction data without structure refinement. With the present single-crystal X-ray study, we confirm the assignment of the TiNiSi type for CaPtAl, in a fully ordered inverse structure. All three atoms of the asymmetric unit have .m. site symmetry. The structure features a (∞) (3)[AlPt] open framework with a fourfold coordination of Pt by Al atoms and vice versa. The Ca atoms are located in the large channels of the structure.
authors: Patrice
authors: P
authors: Kenfack Tsobnang
authors: Daniel
authors: D
authors: Fotio
authors: Siméon
authors: S
authors: Ponou
authors: Charles
authors: C
authors: Fon Abi