Bis(permethylindenyl) complexes of thorium: Synthesis, structure, and reactivity

Tina M. Trnka, Jeffrey B. Bonanno, Brian M. Bridgewater, Gerard Parkin

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


A variety of thorium complexes incorporating the bulky permethylindenyl ligand (Ind* = C9Me7) have been synthesized and characterized. Specifically, the dichloride Ind*2ThCl2 is obtained by reaction of ThCl4 with Ind*Li, from which Ind*2ThMe2, Ind*2Th(NMe2)2, Ind*2Th(NC4H4)2, and Ind*2Th(η3-H3BH)2 may be obtained by metathesis with MeLi, LiNMe2, LiNC4H4, and Ca(BH4)2, respectively. In contrast to simple metathesis, reaction of Ind*2-ThCl2 with KN(SiMe3)2 yields the metallacycle Ind*2Th(η2-CH2SiMe2 NSiMe3). X-ray diffraction studies on Ind*2ThCl2, Ind*2ThCl(μ-Cl)2Li(tmeda), Ind*2ThMe2, Ind*2Th(NMe2)2, Ind*2-Th(η2-CH2SiMe2 NSiMe3), and Ind*2Th(η3-H3BH)2 indicate that the permethylindenyl ligands in these complexes exhibit a variety of conformations.

Original languageEnglish (US)
Pages (from-to)3255-3264
Number of pages10
Issue number15
StatePublished - Jul 23 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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