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三、有机锂的紫外吸收光谱 本文中的有机锂仅包括正丁基锂(n-BuLi)及聚丁二烯基锂(PBLi)两种。研究内容为有机锂的缔合度,Lewis碱的络合作用,σ-、π-活性种的紫外吸收光谱理论,以及有机锂与Lewis碱的副反应等。 文献[1]认为,烷基锂的缔合体随烷基基团的性质、溶剂的极性而变化,而n-BuLi在烃类中呈六缔合体,在极性介质中则呈四缔合休。对PBLi而言,Bywater等采用光散射法在烃类中测得的缔合度为4,
Third, the organic lithium ultraviolet absorption spectrum Organic lithium in this article only includes n-BuLi (n-BuLi) and polybutadienyl lithium (PBLi) two. The research contents include the association degree of organolithium, the complexation of Lewis base, the theory of ultraviolet absorption spectrum of σ-, π-active species, and the side reactions of organolithium and Lewis base. Literature [1] that the alkyllithium association with the nature of the alkyl groups, the polarity of the solvent changes, and n-BuLi hydrocarbons in the six association, in the polar medium was four associations Hugh For PBLi, Bywater et al. Measured the degree of association in hydrocarbons by light scattering as 4,