DMA水溶液的^1H NMR研究  

1H NMR Studies of Aqueous N,N-Dimethylacetamide Solutions

作　　者：朱龙华[1] 平磊[1] 雷毅[2] 

机构地区：[1]中国计量学院生命科学学院,杭州310018 [2]浙江大学化学系,杭州310027

出　　处：《化学学报》2005年第14期1293-1297,i002,共6页Acta Chimica Sinica

基　　金：浙江省自然科学基金(No.M203033)资助项目.

摘　　要：测量了N,N-二甲基乙酰胺(DMA)水溶液体系不同温度下全浓度范围的1HNMR数据,对体系中的缔合情况进行了讨论,应用化学缔合模型求得了各缔合平衡常数K和缔合平衡的?H.结合N,N-二甲基甲酰胺(DMF)和N-甲基乙酰胺(NMA)水溶液的研究结果,发现酰胺自身结构和酰胺浓度是影响酰胺水溶液性质的主要因素.~1H NMR of aqueous N,N-dimethylacetamide (DMA) solutions was measured at different temperatures. Based on chemical association model, the association equilibrium constant K and the corresponding ?H were obtained. In addition, these results were compared with those of aqueous dimethylformamide and N-methylacetamide solutions. It was found that the effect of the amides on the structure of water was very dependent upon solution composition and the intrinsic molecular structure of the amide.

关 键 词：^1H NMR DMA N-二甲基甲酰胺 N-甲基乙酰胺 二甲基乙酰胺 水溶液体系 水溶液性质 浓度范围 平衡常数 缔合模型 应用化学 研究结果 

分 类 号：O623.6[理学—有机化学]