کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1335237 | 1500248 | 2015 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Mass spectrometric decomposition of [MNO3]+ cations, where M = Ca, Sr, Ba Mass spectrometric decomposition of [MNO3]+ cations, where M = Ca, Sr, Ba](/preview/png/1335237.png)
ESI-CID-MS/MS spectra of [MNO3]+ ions (M stands for Ca, Sr, Ba), the simplest ionic species composed of a metal and a nitrate group, are discussed in detail. These ions decompose through the loss of an NO molecule (with the formation of the MO2+ fragment ion) and/or the loss of an NO2 molecule (with the formation of the MO+ fragment ion). The efficiencies of these processes strongly depend on the electrostatic attraction between the metal and the oxygen atoms of the nitrate group. For the [CaNO3]+ ion the loss of an NO molecule is the only decomposition observed, for the [SrNO3]+ ion both processes are observed and their efficiencies depend on the collision energy, and for [BaNO3]+ ion the loss of an NO2 molecule is the dominant process. Alkali earth metal cations are not prone to reduction (MII → MI), thus the formation of the M+ ion is a minor process.
Mass spectrometric decompositions of the [CaNO3]+, [SrNO3]+ and [BaNO3]+ ions consist of the loss of an NO molecule and/or the loss of an NO2 molecule. The efficiencies of these processes strongly depend on electrostatic attraction between the metal and oxygen atoms of the nitrate group.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 91, 8 May 2015, Pages 136–140