化学
碱金属
复分解
氮气
无机化学
金属
锂(药物)
分解
盐变质反应
氧化态
固态
叠氮化物
物理化学
有机化学
聚合
聚合物
内分泌学
医学
作者
Maxim Bykov,Kelin R Tasca,Iskander G. Batyrev,Dean Smith,Konstantin Glazyrin,Stella Chariton,Mohammad F. Mahmood,A. F. Goncharov
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2020-10-01
卷期号:59 (20): 14819-14826
被引量:20
标识
DOI:10.1021/acs.inorgchem.0c01863
摘要
With the exception of lithium, alkali metals do not react with elemental nitrogen either at ambient conditions or at elevated temperatures, requiring the search for alternative synthetic routes to their nitrogen-containing compounds. Here using a controlled decomposition of sodium azide (NaN3) at high pressure conditions, we synthesize two novel compounds, Na3(N2)4 and NaN2, both containing dinitrogen anions. NaN2 synthesized at 4 GPa might be the common intermediate in high-pressure solid-state metathesis reactions, where NaN3 is used as a source of nitrogen, while Na3(N2)4 opens a new class of compounds, where [N2] units accommodate a noninteger formal charge of 0.75–. This finding can dramatically extend the expected compositions in other group 1 and 2 metal–nitrogen systems. Electronic structure calculations show the metallic character for both compounds.
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