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Alumatrane revisited: Distribution of oligomeric ions in electron impact ionization, chemical ionization and liquid secondary ion mass spectra
Author(s) -
Bartlett Michael G.,
Burns Scot A.,
Bruce David A.,
Busch Kenneth L.
Publication year - 1995
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.1190300513
Subject(s) - chemistry , electron ionization , mass spectrum , ion , ionization , chemical ionization , monomer , mass spectrometry , analytical chemistry (journal) , spectral line , ionization energy , electron affinity (data page) , molecule , chromatography , organic chemistry , polymer , physics , astronomy
Oligomeric ions formed from aluminium 2,2′,2″‐nitriltriethoxide (alumatrane) are present in electron impact (EI) ionization, chemical ionization (CI), direct‐exposure probe chemical ionization (DCI) and liquid secondary ion (LSI) mass spectra. These oligomeric ions are most pronounced in the LSI mass spectrum, extending from monomeric to heptameric ions. The oligomeric ions exist there in the forms [M n + H] + and [M n + (AIO) a + (Al 2 O 3 ) b ] + where the sum of a and b can be as high as 5. In contrast to previous interpretations of EI and CI results, the LSI mass spectral data do not support a special stability for either the dimeric or tetrameric gas‐phase forms of alumatrane.