High-Pressure Synthesis of a Nitrogen-Rich Inclusion Compound ReN8xN2 with Conjugated Polymeric Nitrogen Chains

被引:72
|
作者
Bykov, Maxim [1 ]
Bykova, Elena [2 ]
Koemets, Egor [1 ]
Fedotenko, Timofey [1 ]
Aprilis, Georgios [3 ]
Glazyrin, Konstantin [2 ]
Liermann, Hanns-Peter [2 ]
Ponomareva, Alena V. [4 ]
Tidholm, Johan [5 ]
Tasnadi, Ferenc [5 ]
Abrikosov, Igor A. [5 ]
Dubrovinskaia, Natalia [3 ]
Dubrovinsky, Leonid [1 ]
机构
[1] Univ Bayreuth, Bayer Geoinst, Univ Str 30, D-95440 Bayreuth, Germany
[2] Deutsch Elektronen Synchrotron DESY, Photon Sci, Notkestr 85, D-22607 Hamburg, Germany
[3] Univ Bayreuth, Mat Phys & Technol Extreme Condit Lab Crystallog, Univ Str 30, D-95440 Bayreuth, Germany
[4] Natl Univ Sci & Technol MISIS, Mat Modeling & Dev Lab, Moscow 119049, Russia
[5] Linkoping Univ, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden
基金
瑞典研究理事会;
关键词
high-energy-density materials; high-pressure chemistry; nitrides; polymeric nitrogen; X-ray diffraction; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; AB-INITIO; 1ST PRINCIPLES; MECHANICAL-PROPERTIES; BASIS-SET; NITRIDES; REN2; STABILITY; PHASE;
D O I
10.1002/anie.201805152
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A nitrogen-rich compound, ReN(8)xN(2), 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 100GPa, ReN(8)xN(2) 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. Abinitio calculations on ReN(8)xN(2) provide strong support for the experimental results and conclusions.
引用
收藏
页码:9048 / 9053
页数:6
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