Mass Spectrometry in Boron Chemistry

Mass Spectrometric Investigation of the Pyrolysis of Boranes. Tetraborane(10)1

“…Accordingly, the effect of the hydrogen ions in the reaction peroxydisulfate-iodide is merely a salt effect, and is even smaller than the effect of the alkali metal ions. 28 On the other hand, acid catalysis is operating in many reactions of the peroxides, which Edwards con-is performed in the absence of KC104 (run 38). Apparently the negative salt effect on equilibrium 11 is sufficient to compensate for the positive salt effect on reaction 13.…”

Laser-induced chemistry of diborane

“…B10FI14 purity was determined by infrared spectroscopy8 and melting point,11 (BH)n was characterized by noting its infrared spectrum, lack of a melting point, deliquescence properties, and reaction with H20 to form an acid solution.12 The B5H9 and B5Hn mixture was characterized by infrared spectroscopy and mass spectrometry. 13 The laser was a Coherent Radiation Model 42 CW C02 laser fitted with a Model 435 grating. Single-line operation was monitored with an Optical Engineering C02 spectrum analyzer.…”

Ion chemistries in triethylborane

“…In a mass spectrometry study on boron chemistry a few decade ago, a technique of isotopic variation of the two boron isotopes was used to deduce numbers of boron atoms in particular ions. [19] When the isobaric ions (the boron-containing and non-boron-containing species) overlap, however, this technique will be difficult to implement to determine the accurate distribution of boron isotopes.…”

“…At 11.4 eV, the fragment ion BC 2 H 6 + emerges, which is expected to be formed by further dissociation of BC 4 H 10 + via loss of C 2 H 4 , with an H atom from a cleaved ethyl group attaching itself to the B atom, [19] resulting in a valence structure of (C 2 H 5 )-B + -H.…”