Excitations of lithium ammonia complexes studied by inelastic x-ray scattering

C. A. Burns, G. Vankó, H. Sinn, A. Alatas, E. E. Alp, A. Said

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6 Citations (Scopus)

Abstract

We have carried out high-resolution inelastic x-ray scattering measurements of the excitations of lithium dissolved in ammonia. The incident x-ray energy was 21.6 keV and the resolution was about 2 meV. Several different excitations are observed in the energy range of 0-60 meV (0-500 cm-1). In addition to acoustic phonons at low energies, we see excitations that are associated with vibrations of Li (N H3) 4+ complexes. We examined these excitations as a function of momentum transfer, lithium concentration, temperature, and state of the system (solid versus liquid). Data are compared with Hartree-Fock and density-functional theory calculations of the excitations of this complex, which agree well with the measured excitation energies.

Original languageEnglish
Article number024720
JournalJournal of Chemical Physics
Volume124
Issue number2
DOIs
Publication statusPublished - Jan 23 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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