Low-temperature SIMS mass spectra of diethyl ether

Marina V. Kosevich, Vadim S. Shelkovsky, Oleg A. Boryak, Agnes Gömöry, Peter D. Végh, Károly Vékey

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Abstract

For the first time a secondary ion mass spectrum of diethyl ether was obtained at low temperature. The spectrum recording became possible by carefully selecting the range of experimental conditions for the production of a cluster-type spectrum. This range is specified by the threshold for spectrum appearance above the melting temperature of the frozen sample and a fairly short time span of existence of the liquid estimated as only a few minutes. The latter necessitates rather rapid spectrum detection. In practice, about 1 min was available for recording of the cluster-type spectra. The secondary emission mass spectrum of diethyl ether appeared to be rich in peaks: along with abundant protonated clusters Mn · H+ (n = 1-12), unusually intense [Mn - H]+ and weaker Mn+• peaks were present accompanied by several sets of fragmented clusters, [Mn - 15]+, [Mn - 29]+, [Mn - 27]+, [Mn - 45]+, and monohydrates, Mn · H2O · H+. The analysis of all the peaks showed that the pattern of fragment clusters is qualitatively similar to the pattern of fragmentation of the diethyl ether molecular ion under high-energy electron impact. The general features of the behaviour of diethyl ether under low-temperature mass spectrometric conditions were similar to those observed earlier for some other organic solvents.

Original languageEnglish
Pages (from-to)517-522
Number of pages6
JournalJournal of Mass Spectrometry
Volume38
Issue number5
DOIs
Publication statusPublished - máj. 1 2003

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ASJC Scopus subject areas

  • Spectroscopy

Cite this

Kosevich, M. V., Shelkovsky, V. S., Boryak, O. A., Gömöry, A., Végh, P. D., & Vékey, K. (2003). Low-temperature SIMS mass spectra of diethyl ether. Journal of Mass Spectrometry, 38(5), 517-522. https://doi.org/10.1002/jms.464