二茂镱,镝邻位取代苯甲酸衍生物的薄层色谱与紫外光谱的研究

用改性薄层色谱板研究了二茂镱、镝邻位取代苯甲酸衍生物的色谱行为,发现R_t值随芳环邻位取代基R的给电子能力递增而递降。初步从理论上探讨了R_t值与紫外光谱R带λ_(max)值随R基团呈相反的变化关系。

A Study on the Thin-Layer Chromatography and Ultraviolet Spectrum of Dicyclo-pentadienyl Ytterbium and Dysprosium o-Substitutied Benzole Acid Derivatives

The thin-layer chromatography behavior of dicyclopentadienyl ytterbium and dysprosium o-substituted benzoic acid derivatives is studied using silica gel G plate impregnated with decane. The following rules have been obtained:1. The Rf values are decreased as the increasing of the electron donating ability of o-substituting group in the aromatic ring.2. The silica gel plate impregnated with decane diminishes the absorbing activity only, but has no effect on the behavior of absorption chromatography.3. The RI values change in the opposite direction with the Am., values of ultraviolet spectrum for the series of compounds. The preliminary discussion is also made for this relationship in theory.