Dinitrogen complexes of bis(cyclopentadienyl) titanium derivatives: Structural diversity arising from substituent manipulation

Tamara E. Hanna, Emil Lobkovsky, Paul J. Chirik

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Dinitrogen coordination to a family of bis(cyclopentadienyl)titanium sandwich complexes, (η 5-C 5Me 4R) 2Ti (R = alkyl, aryl, silyl), has been systematically evaluated by in situ solution infrared spectroscopy. The maximum temperature of N 2 coordination (T max) has been determined as a function of cyclopentadienyl substituent and has been correlated with the structural type (monomer or dimer) of the resulting dinitrogen complex. The electronic properties of each titanium sandwich complex were assessed by infrared spectroscopy of the dicarbonyl derivatives and by the oxidation potentials of the corresponding ferrocenes, (η 5 -C 5Me 4R) 2Fe. From these data, the thermodynamic preferences for N 2 coordination have been established and they increase with smaller, electropositive substituents.

Original languageEnglish (US)
Pages (from-to)4079-4088
Number of pages10
JournalOrganometallics
Volume28
Issue number14
DOIs
StatePublished - Jul 27 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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