Multinuclear NMR studies of the reactions of MeAsH2 with Me2AsNMe2 and Me2AsNMe2·BH3

Academic Article


  • The reactions of MeAsH2 with Me2AsNMe2 and Me2AsNMe2·BH3 have been carried out in toluene-d8 solution as a function of temperature and time. The progress of the reactions was monitored by multi- nuclear (1H, 11H, and 13C) NMR spectroscopy over the temperature range of -80 and -10 °C. NMR spectral data analysis suggests the initial formation of an unstable intermediate, Me2AsAs(H)Me, which undergoes multiple condensation reactions to give (MeAs)5. The other products of the reactions are Me2AsAsMe2, Me2AsH, MeAsH2, Me2NH or Me2NH· BH3 and uncharacterized, condensed, AsAs bonded compounds. Several competitive exchange reactions involving compounds capable of exchanging H-, {A figure is presented} Me2As-, and Me2N- units influence the rate of reaction, as well as the product yields. The reactions involving {A figure is presented}, and (Me/As)5/AsH2, systems have been examined to determine their relative significance in the reactions of MeAsH2 with Me2AsNMe2 and its NB bonded BH3 adduct. © 1987.
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    Author List

  • Gupta VK; Krannich LK; Watkins CL
  • Start Page

  • 173
  • End Page

  • 177
  • Volume

  • 126
  • Issue

  • 2