Studies in Negative-Ion Mass Spectrometry. XII. Electron Attachment to a Series of Bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)-metal Complexes

Author:

Dakternieks DR,Fraser IW,Garnett JL,Gregor IK

Abstract

Results of electron-attachment reactions in the gas phase as well as negative-ion mass spectra are given for a series of bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)metal(1) complexes, (ML2), with the divalent metals MgII, MnII, Co11, Nil1, Cu11 and ZnII. While molecular, [ML2]- or [ML2]-, and ligand, [L]-, ions are present in the negative-ion mass spectra, the lability of the ligand C-F and C-CF3 bonds enables rearrangement processes involving fluorine atom transfers to become significant in the decompositions of both molecular and fragment ions, particularly for the class (a) metals, for which significant yields of [MLF2] and [MLF] negative ions were obtained. Thus, the predominant fragmentation pathway for such metal-containing complexes, for which metastable peaks have been assigned, occurs in the sequence [ML2]- -(*) → (MLF2]- - (8) → [L]- or alternatively [ML2]- -(*) → (MLF2]- - (8) → [L]- with the latter fragmentation in these sequences involving the elimination of the divalent metal fluoride, MF2.

Publisher

CSIRO Publishing

Subject

General Chemistry

Cited by 7 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Pulse radiolysis studies of transition metal beta-diketones—I. Products of electron attachment reactions in solution;International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry;1986

2. Halide ion radical reactions of zinc(II)β-ketoenolates in the gas phase;Inorganica Chimica Acta;1984-07

3. Mass spectrometry of metal-organic negative ions;Mass Spectrometry Reviews;1984

4. Letter to the editor;Organic Mass Spectrometry;1983-01

5. UV and radiation grafting of p-styryl diphenyl phosphine to synthetic polymers and the use of the resulting copolymers in insolubilization processes;Journal of Polymer Science: Polymer Letters Edition;1981-01

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