405885-18-9Relevant academic research and scientific papers
Synthesis and reactivity of organolanthanoid complexes containing N and S ligands
Shen, Qi,Yao, Yingming
, p. 180 - 189 (2002)
This paper provides a brief account of our recent researches in organolanthanoid chemistry containing N and S ligands. The first is concerned with the synthesis of organolanthanoid complexes, including anionic, supramolecular, neutral organolanthanoid amides and the organolanthanoid complexes supported by β-diketiminate, as well as organolanthanoid thiolates. The second deals with the reactivity of these organolanthanoid complexes, including the reaction with phenyl isocyanate, CS2, and phenyl isothiocyanate, and the catalytic activity for the polymerization of polar monomers, such as methyl methacrylate, (dimethylamino) ethyl methacrylate and ε-caprolactone.
Synthesis, reactivity, and structure of mixed-ligand ytterbium complexes supported by β-diketiminate
Yao, Yingming,Zhang, Yong,Shen, Qi,Yu, Kaibei
, p. 819 - 824 (2008/10/08)
The preparation and reaction chemistry of β-diketiminate ytterbium complexes is described. Reaction of [(DIPPh)2nacnac]Li ((DIPPh)2nacnac = N,N-diisopropylphenyl-2,4-pentanediimine anion) with 1 equiv of anhydrous YbCl3 in THF, followed by crystallization from toluene, affords the monomeric complex [(DIPPh)2nacnac]YbCl2(THF)2 (1) in high yield. Recrystallization of complex 1 from toluene gives an unexpected dimeric complex, {[(DIPPh)2-nacnac]YbCl(μ-Cl)2Yb[(DIPPh)nacnac](THF)} ·1/2MePh (2), which has a rare triple chloride bridge. Reaction of complex 1 with CH3C5H4Na in 1:1 molar ratio in THF gives the mixed-ligand ytterbium chloride (CH3C5H4)[(DIPPh)2nacnac]YbCl (3). Complex 3 readily undergoes metathesis reactions with 1 equiv of LiNPh2 or LiNPri2 in THF to form the compounds (CH3C5H4)[(DIPPh)2nacnac]YbNPh2 (4) and (CH3C5H4)[(DIPPh)2nacnac]YbNPri 2 (5), respectively. The complexes 2, 3, and 4 have been characterized by an X-ray diffraction structure determination.
