Fast atom bombardment and laser desorption mass spectrometry for determination of alkyltriphenylphosphonium salts was written by McCrery, D. A.;Peake, D. A.;Gross, Michael L.. And the article was included in Analytical Chemistry in 1985.Computed Properties of C23H26BrP This article mentions the following:
Mass spectra of alkyltriphenylphosphonium halides were obtained by using fast atom bombardment (FAB) coupled with tandem mass spectrometry (MS/MS) and laser desorption (LD) with Fourier-transform mass spectrometry (FTMS). In addition, collisionally activated dissociation (CAD) spectra of laser-desorbed phosphonium ions were obtained. The 2 methods of ionization are equally useful in determining mol. weight of the phosphonium ions. However, high-energy collisional activation is needed to obtain unambiguous structural confirmation of the alkyl group. In addition, ion abundance ratios provide information about the internal energy of the phosphonium ions produced by LD and FAB. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Computed Properties of C23H26BrP).
Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Computed Properties of C23H26BrP
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary