604806-61-3

Upstream product

• 10361-91-8 ytterbium(III) chloride 
• 482323-03-5 lithium N,N'-bis(2,6-dimethylphenyl)-2,4-pentanediiminate 
• 109-99-9 tetrahydrofuran 

Downstream Products

• 604806-65-7 Yb(C₅H₅)2(C₆H₃(CH₃)2NCCH₃CHCCH₃NC₆H₃(CH₃)2) 
• 757952-12-8 [(((2,6-Me2C6H3)NC(Me))2CH)2Cl(THF)Yb2(μ-Cl)3] 

Relevant academic research and scientific papers

β-Diketiminatoytterbium aryloxides: Synthesis, structural characterization, and catalytic activity for addition of amines to carbodiimides

The steric effect of an aryloxido group on the synthesis and molecular structures of ytterbium aryloxides supported by β-diketiminato ligand L (L = [N(2,6-Me2C6H3)C(Me)]2CH -) is reported. Reactions o

The salt-free diamido complexes of lanthanide supported by β-diketiminate: Synthesis, characterization, and their catalytic activity for the polymerization of acrylonitrile and ε-caprolactone

The synthesis and structure of the salt-free diamido complexes of lanthanide supported by β-diketiminate ligand (2,6-Me2C 6H3)NC(Me)CHC(Me)N(2,6-Me2C6H 3) are described. The β-diketiminate lanthanide dichloride LLnCl2(THF)2 (L = N,N′-bis(2,6-dimethylphenyl)-2,4- pentanediiminate) [Ln = Yb (1), Nd (2)] was prepared by the metathesis reaction of LLi with anhydrous LnCl3 in a 1:1 molar ratio in THF at room temperature. Reactions of 1 and 2 with 2 equiv. of LiNPh2 in THF gave the salt-free complex LLn(NPh2)2(THF) [Ln = Yb (3), Nd (4)] in good yield as crystalline solids. Both compounds were characterized crystallographically. The coordinated geometry around the central metal can be described as a distorted trigonal bipyramid. Complexes 3 and 4 showed good catalytic activity for the polymerization of acrylonitrile and high activity for the ring-opening polymerization of ε-caprolactone at room temperature.

Synthesis, characterization and structural diversity of lanthanide chlorides supported by the β-diketiminate ligand [{(2,6-Me 2C6H3)NC(Me)}2CH]-

Reactions of the β-diketiminate lithium salt L2Li [L 2={(2,6-Me2C6H3)NC(Me)} 2CH] with anhydrous LnCl3 (Ln=Yb, Sm, Nd) in 1:1 molar ratio in THF afforded the new β-diketiminate l

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

The reactions of ytterbium dichlorides with different β-diketiminate ligand ((Ar)NC(Me)CHC(Me)N(Ar′), Ar=Ar′=C6 H5 (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 L1 and 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)2 Li(THF)2 is 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.