Heterometallic lanthanide Group 12 metal iodides

Louise Huebner, Anna Kornienko, Thomas J. Emge, John G. Brennan

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

Neodymium tri-iodide reacts with Group 12 metal (M; M = Zn, Cd, Hg) iodides to form heterometallic compounds. These Lewis acidic M cleave Nd-I bonds to give either ionic {[(THF)5NdI2][MI3THF]; M = Zn, Cd} or charge-neutral {(THF)5NdI(μ2I)HgI3} compounds. Differences in structure are interpreted primarily in terms of M-L bond strengths, rather than Nd-L bond strengths. Experiments with Yb indicate that if there is any excess iodide present in these syntheses then the most readily isolated product is a triiodide salt, i.e., [(THF)5YbI 2][I3]. In conventional solvents the presence of Lewis acid is not required for iodide displacement-from pyridine, "YbI 3" crystallizes as [(Py)5YbI2][I]. These compounds are potentially useful as heterometallic sources of lanthanide-doped iodide matrixes, they illustrate the ease with which iodides are displaced from lanthanide coordination spheres, and they underscore the complexity associated with using lanthanide iodides as Lewis acid catalysts.

Original languageEnglish (US)
Pages (from-to)5659-5664
Number of pages6
JournalInorganic Chemistry
Volume43
Issue number18
DOIs
StatePublished - Sep 6 2004

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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