Synthesis and characterization of β-diketiminate lanthanide complexes: The effect of the bulkiness of ancillary ligand on the reaction

Yingming Yao, Mingqiang Xue, Yunjie Luo, Zhenqin Zhang, Rui Jiao, Yong Zhang, Qi Shen, Wing Tak Wong, Kaibei Yu, Jie Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

50 Citations (Scopus)

Abstract

The reactions of ytterbium dichlorides with different β-diketiminate ligand ((Ar)NC(Me)CHC(Me)N(Ar′), Ar=Ar′=C6H5(L1); Ar=Ar′=2,6-Me2-C6H3(L2); Ar=C6H5, Ar′=2,6-Pr2i-C6H3(L3)) with 1 equiv of Cp′Na were studied. It was found that the bulkiness of β-diketiminate ligand and cyclopentadienyl group both have significant effect on the above reaction. For less bulky ligands L1and L2, the reaction affords not the expected mixed-ligand ytterbium chloride, (C5H5)YbLCl or (CH3C5H4)YbCl, but the ligand-redistributed product (C5H5)2YbL or (CH3C5H4)2YbL. For bulkier ligand L3, the desired anionic ytterbium chloride (C5H5)YbL3(μ-Cl)2Li(THF)2is obtained. For the smallest ligand L1, the expected ytterbium monochloride can also be obtained using bulky C5Me5Na as reactant. Each of these complexes was well characterized, while several have been characterized by X-ray diffraction structure determination.
Original languageEnglish
Pages (from-to)108-116
Number of pages9
JournalJournal of Organometallic Chemistry
Volume678
Issue number1-2
DOIs
Publication statusPublished - 15 Jul 2003
Externally publishedYes

Keywords

  • β-Diketiminate ligand
  • Crystal structures
  • Organolanthanides
  • Reactivity
  • Synthesis

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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