Abstract
Owing to intriguing materials properties non-metal nitrides are of special interest for both, solid-state chemistry and materials science. Mixed ternary non-metal nitrides, however, have only been sparsely investigated, as preparative chemistry lacks a systematic access, yet. Herein, we report on the highly condensed boron phosphorus nitride BP3 N6 , which was synthesized from (PNCl2 )3 , NH4 N3 and h-BN in a high-pressure high-temperature reaction. By increasing partial pressure of HCl during synthesis using NH4 Cl, single-crystals of BP3 N6 up to 80 μm in length were obtained. The unprecedented framework-type structure determined by single-crystal XRD blends structural motifs of both, α-P3 N5 and c-BN, rendering BP3 N6 a double nitride. The compound was further investigated by Rietveld refinement, EDX, temperature-dependent PXRD, FTIR and solid-state NMR spectroscopy. The formation of BP3 N6 through use of reactive precursors exemplifies an innovative access to mixed non-metal nitrides.
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