摘要
本文利用快原子轰击质谱研究了2－（乙酰基－乙氧羰基）亚甲基四氢咪唑与Fe（Ⅲ）、Fe（Ⅱ）、Cu（Ⅱ）间的相互作同。不同的质谱特征表明了Fe（Ⅲ）与配位体形成了稳定的配合物，而Fe（Ⅱ）和Cu（Ⅱ）却具有促进配体之间的聚合作用。同时，观察到形成低聚体的不同说明了Cu（Ⅱ）的催化聚合比Fe（Ⅱ）更加有效。而且，为了使以上实验现象得到合理的解释，提出了相应的配住物中间体作用机理。
The interaction of 2-(acetyl-ethoxycarbonyl )-methylene-tetrahydroimidazole (L )and Fe(Ⅲ) .Fe (Ⅱ),Cu (Ⅱ) were investigated by using fast atom bombardment mass spectrometry(FABMS) technique. Fe(Ⅲ) ion formed stable metal complex ([FeL,]+)when Fe(Ⅲ) was added in the ligand. However,Fe(Ⅲ) and Cu(Ⅲ) promote the polymerization of ligand, and the observation of different lower polymer ions in mass spectra indicated that, for the polymerization,Cu (Ⅱ) is more efficient than Fe (Ⅱ). Furthermore,in order to explain the experimental results,the possible competition mechanism between the coordination bond and hydrogen bond in the metal complex interrnediate has been proposed.
出处
《质谱学报》
EI
CAS
CSCD
1997年第3期41-45,共5页
Journal of Chinese Mass Spectrometry Society
关键词
铁
铜
FABMS
配位作用
四氢咪唑
fast atom bombardment mass spectrometry
coordination
2-(Acetyl ethoxycarbonyl) -methylene-tetrahydroimidazole)
