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环戊二烯基羰基铁衍生物[C_5H_5Fe(CO)_2CH_2COOR]的质谱表明该衍生物可以从两条途径碎裂,最后降解为裸露的铁正离子(Fe~+),且C_5H_5Fe~+离子还可以脱去C_2H_5形成C_3H_3Fe~+离子。从铁配位化合物的质谱中观察到的足够亚稳离子确立了从分子离子到裸露的铁离子的降解途径。
Mass spectrometry of the cyclopentadienyl carbonyl iron derivative [C_5H_5Fe (CO) _2CH_2COOR] showed that the derivative could fragment from two pathways and finally degrade to bare iron cation (Fe ~ +), and C_5H_5Fe ~ + ion C_2H_5 can be taken off to form C_3H_3Fe ~ + ions. Sufficiently metastable ions observed from mass spectrometry of iron coordination compounds establish a pathway for the degradation of iron ions from molecular ions to bare ions.