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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Synthesis, reactivity and structural characterization of ytterbium complexes bearing a tridentate [O,N,N] Schiff base ligand
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Synthesis, reactivity and structural characterization of ytterbium complexes bearing a tridentate [O,N,N] Schiff base ligand

机译:含三齿[O,N,N]席夫碱配体的配合物的合成,反应性和结构表征

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摘要

The synthesis, characterization and reactivity of ytterbium monochloride supported by tridentate Schiff base ligands are described. The metathesis reaction of anhydrous YbCl_3 with 1 equivalent of the sodium salt of a Schiff base, [{LNa(THF)}_2] (1) [LH = 3,5-Bu~t_2-2-(OH)-C_6H_2CHN-8-C_9H _6N], gave the ytterbium Schiff base monochloride complex L _2YbCl (2). Complex 2 reacted with NaOAr (OAr = OC_6H _3But-2-Me-4) in a 1:1 molar ratio to form the desired aryloxo derivative L2Yb(OAr) (3). Complex 3 can also be prepared by the one-pot reaction of the Schiff base HL, n-BuLi, YbCl_3 and NaOAr in a 2:2:1:1 molar ratio. However, an unprecedented ytterbium aryloxide LL′Yb(OAr) (4) (L′ = 3,5-Bu~t_2-2-(O)C 6H2CH(C_4H_9)-NH-8-C_9H _6N) can be isolated in low yield as a byproduct in the later case. Reaction of complex 2 with 1 equivalent of (CH_2CH-CH_2)MgBr in THF afforded the unexpected complex [Mg(H_2N-8-C_9H _6N)Cl(THF)_3]Br (5). Complexes 2-5 were fully characterized by elemental analysis and X-ray diffraction.
机译:描述了三齿席夫碱配体负载的一氯化的合成,表征和反应性。无水YbCl_3与1当量席夫碱的钠盐[{LNa(THF)} _ 2](1)[LH = 3,5-Bu〜t_2-2-(OH)-C_6H_2CHN-8]的复分解反应-C_9H _6N],得到席夫碱一氯化complex配合物L _2YbCl(2)。配合物2与NaOAr(OAr = OC_6H _3But-2-Me-​​4)以1:1的摩尔比反应形成所需的芳基氧代衍生物L2Yb(OAr)(3)。配合物3也可以通过席夫碱HL,n-BuLi,YbCl_3和NaOAr以2:2:1:1的摩尔比的一锅法反应来制备。但是,可以在低浓度下分离出前所未有的芳基LL'Yb(OAr)(4)(L'= 3,5-Bu〜t_2-2-(O)C 6H2CH(C_4H_9)-NH-8-C_9H _6N)在后一种情况下作为副产品产生。配合物2与1当量的(CH_2CH-CH_2)MgBr在THF中的反应产生了意外的配合物[Mg(H_2N-8-C_9H_6N)Cl(THF)_3] Br(5)。配合物2-5通过元素分析和X射线衍射充分表征。

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