Structure and dynamics of ammonia in Li-ammonia intercalated TiS2: a proton NMR study

G. W. O'Bannon, M. J. McKelvy, W. S. Glaunsinger, R. F. Marzke

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Measurements of NMR line widths and spin-lattice relaxation times for protons, as functions of temperature and NMR frequency, have in recent years yielded much information about the ammonia molecule intercalated into TiS2. In conjunction with neutron powder diffraction studies, NMR has been used to probe: (1) intercalated ammonia's molecular motions, (2) distortions in its structure and (3) bonding interactions with its host. The effects of intercalation with Li-ammonia solutions, instead of pure NH3, have been found to be especially large on the first and third of these, indicating a restricted range for rotational motion of the molecule during diffusion and at the same time weakened bonding of the ammonia protons to TiS2 sulfur layers. Frequency and temperature dependences of spectral density functions (from T1 measurements) have been examined for evidence of two-dimensional diffusion. Current findings from NMR bearing on these and related subjects will be reviewed, and comparisons with NH3-intercalated TiS2 will be made.

Original languageEnglish (US)
Pages (from-to)167-173
Number of pages7
JournalSolid State Ionics
Issue numberPART 1
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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