Lucien Eisenburger1, Oliver Oeckler2, Wolfgang Schnick3. 1. Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen, Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY. 2. University of Leipzig, Mineralogy, Crystallography and Material Science, Scharnhorststr. 20, 04275, Leipzig, GERMANY. 3. Ludwig-Maximilians-Universitat Munchen, Department Chemie Lehrstuhl f. Anorganische Festkörperchemie, Butenandtstr. 5-13, 81377, München, GERMANY.
Abstract
Tetrahedra based nitrides with network structures have emerged as versatile materials with a broad spectrum of properties and applications. Both nitridosilicates and nitridophosphates are well-known examples of such nitrides which upon doping with Eu 2+ exhibit intriguing luminescence properties that make them attractive for applications. Nitridosilicates and nitridophosphates show manifold structural variability, however, no mixed nitridosilicatephosphates except SiPN 3 and SiP 2 N 4 NH have been described so far. The compounds AE SiP 3 N 7 ( AE = Sr, Ba) were synthesized by a high-pressure high-temperature approach using the multianvil technique (8 GPa, 1400 - 1700 °C) starting from the respective alkaline earth azides and the binary nitrides P 3 N 5 and Si 3 N 4 . The latter were activated by NH 4 F, probably acting as a mineralizing agent. SrSiP 3 N 7 and BaSiP 3 N 7 were obtained as single crystals. They crystallize in the barylite-1 O ( M = Sr) and barylite-2 O structure types ( M = Ba), respectively, with P and Si being occupationally disordered. Cation disorder is further supported by solid-state NMR and EDX mapping of BaSiP 3 N 7 with atomic resolution. Upon doping with Eu 2+ , both compounds show blue emission under UV excitation.
Tetrahedra based nitrides with network structures have emerged as versatile materials with a broad spn>ectrum of propn>erties and apn>plications. Both n>an class="Chemical">nitridosilicates and nitridophosphates are well-known examples of such nitrides which upon doping with Eu 2+ exhibit intriguing luminescence properties that make them attractive for applications. Nitridosilicates and nitridophosphates show manifold structural variability, however, no mixed nitridosilicatephosphates except SiPN 3 and SiP 2 N 4 NH have been described so far. The compounds AE SiP 3 N 7 ( AE = Sr, Ba) were synthesized by a high-pressure high-temperature approach using the multianvil technique (8 GPa, 1400 - 1700 °C) starting from the respective alkaline earth azides and the binary nitrides P 3 N 5 and Si 3 N 4 . The latter were activated by NH 4 F, probably acting as a mineralizing agent. SrSiP 3 N 7 and BaSiP 3 N 7 were obtained as single crystals. They crystallize in the barylite-1 O ( M = Sr) and barylite-2 O structure types ( M = Ba), respectively, with P and Si being occupationally disordered. Cation disorder is further supported by solid-state NMR and EDX mapping of BaSiP 3 N 7 with atomic resolution. Upon doping with Eu 2+ , both compounds show blue emission under UV excitation.
Authors: Lucien Eisenburger; Philipp Strobel; Peter J Schmidt; Thomas Bräuniger; Jonathan Wright; Eleanor Lawrence Bright; Carlotta Giacobbe; Oliver Oeckler; Wolfgang Schnick Journal: Angew Chem Int Ed Engl Date: 2021-12-10 Impact factor: 16.823