Owing to their widespread properties, nitridophosphates are of high interest in current research. Explorative high-pressure high-temperature investigations yielded various compounds with stoichiometry MP 2 N 4 (M = Be, Ca, Sr, Ba, Mn, Cd), which are discussed as ultra-hard or luminescent materials, when doped with Eu 2 + . Herein, we report the first germanium nitridophosphate, GeP 2 N 4 , synthesized from Ge 3 N 4 and P 3 N 5 at 6 GPa and 800 °C. The structure was determined by single-crystal X-ray diffraction and further characterized by energy-dispersive X-ray spectroscopy, density functional theory calculations, IR and NMR spectroscopy. The highly condensed network of PN 4 -tetrahedra shows a strong structural divergence to other MP 2 N 4 compounds, which is attributed to the stereochemical influence of the lone pair of Ge 2 + . Thus, the formal exchange of alkaline earth cations with Ge 2 + may open access to various compounds with literature-known stoichiometry, however, new structures and properties.Nitridophosphates are an extremely diverse class of materials attracting high interest in current research. Their wide range of applications and intriguing materials properties emerge from the structural versatility, which competes with the earth's predominant class of materials, the (oxo)silicates. [1] Due to the isoelectronic combination of elements Si/O and P/N, both form similar structural motifs, most commonly SiO 4 -and PN 4 -tetrahedra. In the majority of cases, these building blocks are arranged in three-dimensional anionic networks or two-dimensional layers. The

We report the first characterization of a newly synthesized germanium nitridophosphate, GeP2N4. GeP2N4 is structurally distinct from all other known MP2N4 systems (M = Be, Ca, Sr, Ba, Mn, Cd)...

Owing to their widespread properties, nitridophosphates are of high interest in current research. Explorative high-pressure high-temperature investigations yielded various compounds with stoichiometry MP 2 N 4 (M = Be, Ca, Sr, Ba, Mn, Cd), which are discussed as ultra-hard or luminescent materials, when doped with Eu 2 + . Herein, we report the first germanium nitridophosphate, GeP 2 N 4 , synthesized from Ge 3 N 4 and P 3 N 5 at 6 GPa and 800 °C. The structure was determined by single-crystal X-ray diffraction and further characterized by energy-dispersive X-ray spectroscopy, density functional theory calculations, IR and NMR spectroscopy. The highly condensed network of PN 4 -tetrahedra shows a strong structural divergence to other MP 2 N 4 compounds, which is attributed to the stereochemical influence of the lone pair of Ge 2 + . Thus, the formal exchange of alkaline earth cations with Ge 2 + may open access to various compounds with literature-known stoichiometry, however, new structures and properties.Nitridophosphates are an extremely diverse class of materials attracting high interest in current research. Their wide range of applications and intriguing materials properties emerge from the structural versatility, which competes with the earth's predominant class of materials, the (oxo)silicates. [1] Due to the isoelectronic combination of elements Si/O and P/N, both form similar structural motifs, most commonly SiO 4 -and PN 4 -tetrahedra. In the majority of cases, these building blocks are arranged in three-dimensional anionic networks or two-dimensional layers. The