Title |
High‐Pressure Synthesis of a Nitrogen‐Rich Inclusion Compound ReN8⋅x N2 with Conjugated Polymeric Nitrogen Chains
|
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Published in |
Angewandte Chemie. International Edition, June 2018
|
DOI | 10.1002/anie.201805152 |
Pubmed ID | |
Authors |
Maxim Bykov, Elena Bykova, Egor Koemets, Timofey Fedotenko, Georgios Aprilis, Konstantin Glazyrin, Hanns‐Peter Liermann, Alena V. Ponomareva, Johan Tidholm, Ferenc Tasnádi, Igor A. Abrikosov, Natalia Dubrovinskaia, Leonid Dubrovinsky |
Abstract |
A novel nitrogen-rich compound, ReN8·xN2, was synthesized via 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·xN2 is an inclusion compound. The amount of trapped nitrogen (x) depends on the synthesis conditions. The polydiazenediyl chains [-N=N-]∞, which constitute the framework, have not been previously observed in any compound. Ab initio calculations on ReN8·xN2 provide strong support for the experimental results and conclusions. |
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