New Ag8PtO6: synthesis, crystal structure, physical properties and theoretical analyses. Issue 15 (28th March 2019)

• Record Type: Journal Article
• Authors: Thakur, Gohil Singh; Reuter, Hans; Rosner, Helge; Fecher, Gerhard H.; Felser, Claudia; Jansen, Martin
• Is Part Of: Dalton transactions. Volume 48:Issue 15(2019)
• Page Start: 5058
• Page End: 5063
• Publication Date: 2019-03-28
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt05081c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Ag8 PtO6 is the first silver platinate and features a framework structure consisting of "isolated" PtO6 octahedra and O–Ag–O linkers. Abstract : We report the synthesis, crystal structure, and basic physical properties of Ag8 PtO6, which represents the first silver platinum ternary oxide. The crystalline compound was obtained from appropriate mixtures of the binary constituents under alkaline conditions at high oxygen pressure, while applying relatively mild thermal conditions (573 K). Ag8 PtO6 crystallizes in a new crystal structure in the triclinic system ( P 1̄). The structure consists of slightly distorted, discrete PtO6 octahedra, which are linked via O–Ag–O dumbbells to form a three dimensional framework. It is a diamagnetic semiconductor with a band gap of 0.9 eV. DFT based calculations confirm an electronic ground state that corresponds to a 5d 6 6s 0 configuration of the Pt atoms, in accordance with the observed diamagnetism.