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酰胺能与水互溶 ,分子中具有质子接收体和给予体 ,通过氢键自身能够缔合 ,被列为蛋白质三大类模型化物之一 [1] .羧酸也是非常有趣的化合物 .它在非极性溶剂中及纯态时主要以环状二聚体形式存在 ;而在水溶液中以开链二聚态为主 ,且随酸疏水烃基链的增长 ,二聚化常数依次增大 .
Amides, which are water-miscible, have proton acceptors and donors in their molecules and are themselves capable of associating via hydrogen bonding and are listed as one of the three major classes of proteins [1]. Carboxylic acids are also very interesting compounds. In polar solvents, it exists mainly in the form of cyclic dimers in the pure state, while in the aqueous solution, the open-chain dimer state is dominant, and the dimerization constant increases with the increase of the hydrophobic hydrocarbon chain.