High-Pressure Synthesis of a Nitrogen-Rich Inclusion Compound ReN₈⋅x N₂ with Conjugated Polymeric Nitrogen Chains

Title data

Bykov, Maxim ; Bykova, Elena ; Koemets, Egor ; Fedotenko, Timofey ; Aprilis, Georgios ; Glazyrin, Konstantin ; Liermann, Hanns-Peter ; Ponomareva, Alena V. ; Tidholm, Johan ; Tasnádi, Ferenc ; Abrikosov, Igor A. ; Dubrovinskaia, Natalia ; Dubrovinsky, Leonid:
High-Pressure Synthesis of a Nitrogen-Rich Inclusion Compound ReN₈⋅x N₂ with Conjugated Polymeric Nitrogen Chains.
In: Angewandte Chemie International Edition. Vol. 57 (2018) Issue 29 . - pp. 9048-9053.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.201805152

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Abstract in another language

A nitrogen-rich compound, ReN8⋅x N2, was synthesized by a direct reaction between rhenium and nitrogen at high pressure and high temperature in a laser-heated diamond anvil cell. Single-crystal X-ray diffraction revealed that the crystal structure, which is based on the ReN8 framework, has rectangular-shaped channels that accommodate nitrogen molecules. Thus, despite a very high synthesis pressure, exceeding 100 GPa, ReN8⋅x N2 is an inclusion compound. The amount of trapped nitrogen (x) depends on the synthesis conditions. The polydiazenediyl chains −N=N−∞ that constitute the framework have not been previously observed in any compound. Ab initio calculations on ReN8⋅x N2 provide strong support for the experimental results and conclusions.