Post‐Synthetic Modification: Systematic Study on a Simple Access to Nitridophosphates. Issue 52 (25th October 2020) - Wendl, Sebastian
Abstract: Nitridophosphates are a well‐studied class of nitrides with diverse materials properties, such as luminescence or ion conductivity. Despite the growing interest in this compound class, their synthesis mostly works through direct combination of starting materials. Herein, we present a systematic study on a promising method for post‐synthetic modification by treating pre‐synthesized nitridophosphates with halides under elevated pressures and temperatures. Herein, we focus on the applicability of this approach to P/N compounds with different degrees of condensation. Accordingly, BaP2 N4, Ba3 P5 N10 Br, SrH4 P6 N12, CaP8 N14, and Ca2 PN3 are investigated as model compounds for framework‐, layer‐, and chain‐type nitridophosphates. The formation of structurally related, as well as, completely unrelated compounds, compared to the starting materials, shows the great potential of the approach, which increases the synthetic possibilities for nitridophosphates significantly. Abstract : A combination of ion exchange/salt metathesis and elevated pressures is examined for the post‐synthetic modification of nitridophosphates. Framework‐, layered‐, and chain‐type structures were treated with halides. Successful implementation on different model compounds makes this approach versatile. With this approach, the synthesis of isotypic compounds as well as completely new structure types was achieved.