•  4
    Isolating benzenium ion salts
    with C. A. Reed, K. C. Kim, E. S. Stoyanov, D. Stasko, F. S. Tham, and P. D. W. Boyd
    When partnered with carborane anions, arenium ions are remarkably stable. Previously investigated only at subambient temperatures in highly superacidic media, protonated benzene is readily isolated as a crystalline salt, thermally stable to > 150 °C. Salts of the type [H][carborane] have been prepared by protonating benzene, toluene, m-xylene, mesitylene, and hexamethylbenzene with the carborane superacid H. They have been characterized by elemental analysis, X-ray crystallography, NMR and IR me…Read more
  •  4
    Establishing through-bond connectivity in solids with NMR: Structure and dynamics in HC60+
    with D. W. Elliott, K. C. Kim, C. A. Reed, and P. D. W. Boyd
    We present a novel nuclear magnetic resonance experiment for establishing through-bond connectivity in solids using scalar coupling-driven correlation. This method, a variant of the popular double-quantum-filtered correlation spectroscopy experiment in liquids, is robust under fast magic-angle-spinning conditions and in the presence of dynamics. In HC60+, where anisotropic molecular motion renders through-space dipolar-driven correlation ineffective, this through-bond correlation method answers …Read more