Ionization potentials of heteroalkenes: a comparative study

Abstract

Methanimine, methylenephosphine and methylenearsine have been prepared in the gas phase and the gaseous flow has been analyzed by spectroscopy. Photoelectron spectra have been recorded and we report here a comparative study on these spectra. This comparison has been extended to the corresponding derivatives with a triple bond: hydrogen cyanide and methylidynephosphine. Estimation by theoretical calculations of the ionization potentials of the unknown methylidynearsine has been proposed.

The importance of anharmonicity in predicting the IR spectra of low coordinated organoarsenic compounds

“…The two simplest multiples bonded carbon-arsenic systems H 2 C@AsH [1][2][3][4][5][6][7][8][9][10][11] and HCAs [8][9][10][12][13][14][15] have been only very recently synthesized and characterized by Mass Spectrometry and UV-Photoelectron Spectroscopy. Also, their electronic structural properties have been investigated from a theoretical point of view thanks to the ionization energies computation by using several approaches.…”

Methylidynearsine (HCAs): synthesis and direct characterization by UV-photoelectron spectroscopy and mass spectrometry

“…Only two unsubstituted heteroalkynes, hydrogen cyanide and methylidynephosphine, have been prepared up to now: Scheele synthesized the first one in 1782 1 and Gier characterized the phosphorus derivative in 1961. 2 For the compound corresponding to the next element of the column 15 of the periodic table, the methylidynearsine 1, the ionization potentials, 3 force constants and bond lengths, 4 the gas-phase proton affinity 5 or basicity 6 have only been investigated from a theoretical point of view.…”