Abstract:
The main attention of present work is to study how benzeneacetamide interacts with other molecules in organic solvents. The frequencies of CO groups in 18 solvents were obtained by using infrared spectroscopy. The empirical parameters of the solvents as the acceptor number (AN), the van der Waals interaction parameters (SVW) and the linear solvation energy relationships (LSER) were correlated with the frequencies of carbonyl stretching vibration (ν(CO)) of benzeneacetamide to estimate the contributions in intermolecular interactions. The results showed that solvent effects on the frequencies of CO stretching vibrations of benzeneacetamide were obvious. Self-association of alkanol leads to enhancement of O-H⋯O=C hydrogen bond strength and red-shift of the ν(CO) peak. The ν(CO) of benzeneacetamide is more vulnerable to the acidity of the hydrogen bond donor of the solvent. This research contributes to a thorough understanding of the molecular interactions and microstructures in the liquid mixtures.
摘要:
目前工作的主要重点是研究苯乙酰胺如何与有机溶剂中的其他分子相互作用。利用红外光谱获得了18种溶剂中CO基团的频率。溶剂的经验参数为受体数(AN),范德华相互作用参数(SVW)和线性溶剂化能关系(LSER)与苯乙酰胺的羰基拉伸振动(ν(CO))的频率相关,以估计分子间相互作用的贡献。结果表明,溶剂对苯乙酰胺的CO拉伸振动频率有明显的影响。烷醇的自缔合导致O-H-O=C氢键强度的增强和ν(CO)峰的红移。苯乙酰胺的ν(CO)更容易受到溶剂氢键供体酸度的影响。这项研究有助于彻底了解液体混合物中的分子相互作用和微观结构。