The crystal structure and luminescence properties of the first lithium oxonitridolithosilicate LiSiNO:Eu

• Published in: Dalton transactions : an international journal of inorganic chemistry 2022-11, Vol.51 (43), p.16465-16478
• Main Authors: Wimmer, Daniel S, Rießbeck, Kilian M, Seibald, Markus, Baumann, Dominik, Wurst, Klaus, Heymann, Gunter, Huppertz, Hubert
• Format: Article
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d2dt03064k

The compound Li 3 SiNO 2 :Eu 2+ was synthesized in high temperature solid-state reactions in weld shut tantalum ampules and the crystal structure of Li 3 SiNO 2 has been determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group C 2/ c (no. 15) with the lattice parameters a = 1049.01(3), b = 1103.42(3), c = 511.86(2) pm, β = 116.14(1)°, and a volume of V = 0.53187(2) nm 3 . This compound is built up from two different layers, which are arranged alternately along the crystallographic a -axis. The results from single-crystal diffraction were confirmed by the Rietveld analysis of bulk samples. Moreover, Li 3 SiNO 2 could be successfully doped with the activator ion Eu 2+ and the luminescence spectroscopy of single-crystals revealed broad band emission at λ max = 601 nm (fwhm = 90 nm). Obtained by a high temperature solid-state synthesis, the compound Li 3 SiNO 2 :Eu 2+ was characterized via SCXRD, PXRD, and luminescence spectroscopy. This revealed a new structure type and interesting luminescence properties.