Gas-phase studies of phosphorus- and arsenic-chalcogenide cage molecules

✍ Scribed by Lorenza Operti; Gian Angelo Vaglio; Maurizio Peruzzini; Piero Stoppioni

• Book ID: 104139056
• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 451 KB
• Volume: 96
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)93735-6

✦ Synopsis

Positive and negative ion chemical ionization and electron impact mass spectra of E,X3 (E = P, As; X = S, Se) cage molecules were investigated. All the molecules undergo analogous cleavages, which are dominated by evenelectron ions. Proton affinities of the tetrapnicogen trichalcogenides were evaluated by the chemical ionization mass spectra (CIh4S) of the molecules in the presence of reagents, such as methane, isobutane, acetone, ethylacetate and ammonia, whose proton affinity is known. P&, PaAs&, PZAs2SJ, PAsaSs, P4Se3 and As4Se3 show similar proton affinities, whilst AS& exhibits a significantly higher proton affinity. Some correlations are drawn between gas-phase behaviour of these molecules and their reactivity in solution.