Various nitrating agents are all NO2 + - carrier complexes actually. The formation of free nitronium is the replacement of nitronium from NO2 + - carrier complexes by H +.
各种硝化剂其实就是NO2~+的载体化物，而游离NO2~+的生成就是H~+将NO2~+从其载体化物中置换出来的过程。
Pyridine can react with halogens, nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.
吡啶可以和卤素、硝基四氟化硼盐、三氧化硫、硼烷及三氧化铬反应，形成一些有用的有机试剂。
Raman spectrum shows no nitronium ion in N_2O_4/O_3, which demonstrates N_2O_4/O_3 nitration aromatics is not a affinitive electronic substitution process.
Raman光谱显示N2O4/O3反应体系不存在硝酰阳离子，说明N2O4/O3硝化芳烃不是硝酰阳离子的亲电取代过程。N2O4/O3硝化苯和甲苯时，反应速率对苯和甲苯的浓度为零级、对四氧化二氮为0.5级；