The Mössbauer effect of SnI4 at high pressures

R. D. Taylor, M. Pasternak, J. N. Farrell

Research output: Contribution to journalArticlepeer-review


Tetravalent tin iodide is a molecular crystal composed of SnI4 tetrahedra loosely packed into a cubic configuration. Under pressure SnI4 becomes metallic at about 15 GPa. We report a Mossbauer effect study of119Sn and129I in SnI4 to pressures of 26 GPa. The spectra exhibit dramatic changes with pressure starting at about 10 GPa and show large pressure hysteresis effects upon reducing the pressure from 26 GPa. In the intermediate region tin exists in both Sn4+ and Sn2+ states, and iodine exists in two nonequivalent sites characterized by a different symmetry and different sign and magnitude of the electric field gradient.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalHyperfine Interactions
Issue number1-4
StatePublished - Feb 1988
Externally publishedYes


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