作者:Ibrahim Sen、Hulya Kara、Akın Azizoglu
DOI:10.1016/j.saa.2016.05.008
日期:2016.10
N-(p-benzoyl)-anthranilic acid (BAA) derivatives have been synthesized with different substituents (X: Br, Cl, OCH3, CH3), and their crystal structures have been analyzed in order to understand the variations in their molecular geometries with respect to the substituents by using (1)H NMR, (13)C NMR, IR and X-ray single-crystal diffraction. The carboxylic acid group forms classic OH⋯O hydrogen bonded dimers in a
已合成具有不同取代基(X:Br,Cl,OCH3,CH3)的N-(对苯甲酰基)-邻氨基苯甲酸(BAA)衍生物,并对其晶体结构进行了分析,以了解其分子几何结构的变化。通过使用(1)H NMR,(13)C NMR,IR和X射线单晶衍射对取代基进行分析。羧酸基团在BAA-Br和BAA-Cl的中心对称R2(2)(8)环基序中形成经典的OH = O氢键二聚体。但是,在BAA-OCH3和BAA-CH3中,没有羧酸基团形成经典的OH = O氢键二聚体。不对称单元由BAA-OCH3中两个晶体学独立的分子组成。DFT计算表明,与B3LYP / 6-31 + G *,B3LYP / 6-31 ++ G *,B3LYP / 6-31 ++相比,单体与二聚体之间的相互作用能在0.5-3.8kcal / mol的范围内。 G**,和B3LYP / AUG-cc-pVDZ水平的理论。不同的氢键模式的存在也由底物支配。对