气相离子C_(18)H_(37)NH_3^+在低碰撞能下的远电荷碎裂反应  

Remote Site Fragmentation of Protonated Octadecylamine at Low Collisional Energies

作　　者：郭兴华[1] 贾维平[1] 刘子阳[1] 孙跃泉[1] 刘淑莹[1] 

机构地区：[1]中国科学院长春应用化学研究所,130022

出　　处：《质谱学报》1993年第3期20-25,共6页Journal of Chinese Mass Spectrometry Society

摘　　要：本文研究了电子轰击、化学电离条件下四碘合钴酸十八胺、四氯合钴酸十八胺加热分解产生的C_(18)H_(37)NH_3^+(m/z270)离子碰撞诱导解离谱,在低碰撞能量范围(0～10eV)、多次碰撞条件下观察到了远电荷碎裂反应,给出了反应所需内能的估计值,该离子比直接由正十八胺质子化得到的离子具有较高的内能。EI^+/CIDMS, CI^+/CIDMS of protonated octadecylamine dissociated from (C_(18)H_(37) NH_3)_2Col_4 and (C_(18)H_(37)NH_3)_2CoCl_4 are discussed at low translational energies, remote site fragmentation is observed in multiple collisions with argon. The internal energy required for remote site fragmentation is also estimated. These ions maybe contain more internal energy than that protonated from octadecylamine directely.

关 键 词：碰撞诱导解离 远电荷碎裂 四碘合酸 

分 类 号：O657.6[理学—分析化学]