二氧化氮NO2气体测毒管117SB NITROGEN DIOXIDE 0.5-30ppm,又称为过氧化氮,是大π键结构的典型分子。大π键含有三个电子,其中两个进入成键π轨道,一个进入非键π轨道。吸入二氧化氮可能对肺组织产生强烈的刺激作用和腐蚀作用。由于其结构的不稳定性,通常情况下与其二聚体形式——四氧化二氮(无色气体)混合存在,构...
It was found that the π-electronic system showed a more pronounced shielding effect on all ring hydrogen atoms, relative to benzene, irrespective of substituent +R/R effects. For the latter, this was in contrast to the traditional explanations of downfield shift of nitrobenzene proton resonances,...
This appears to be an intermolecular attraction of a new type, and it is suggested that a similar mechanism may be responsible for the formation of a large class of the molecular compounds that are formed between aromatic nitro-compounds and polycyclic hydrocarbons....
一氧化氮/二氧化氮NO+NO2气体检测管174A NITROGEN OXIDE/NITROGEN DIOXIDE 10-300ppm(NO),1-40ppm(NO2),甲苯/甲醛/一氧化氮/氨气/二氧化碳/一氧化碳气体检测管 相关信息、甲苯/甲醛/一氧化氮/氨气/二氧化碳/一氧化碳气体检测管不明气体定性检测管 Polytec II 25,气体检测管及采样管,短时间用检测管,一氧化氮...