氢键在有机化学、生物化学、络合物化学和日常生活中都有着重要作用。随着物理化学方法和分子轨道理论的发展,人们对氢键的生成及其本质有了较深入的了解。但对于分子内氢键,由于实验及理论研究都较为复杂和困难,对分子内氢键生成的结构规律的认识还不很多。而分子内氢键,特别是某些共轭分子内氢键系统,常表现出许多特殊性质,而且同某些互变异构过程,螯合试剂的络合性及选择性密切相关。因此,研究分子内氢键生成的结构规律不仅对解释生物和化学中的某些现象、化学反应机理,而且对设计某些具有特殊性质的新的内氢键体系,如新的选择性螯合试 Hydrogen bonding plays an important role in organic chemistry, biochemistry, complex chemistry and daily life. With the development of physical chemistry and molecular orbital theory, people have a deeper understanding of the formation and nature of hydrogen bonds. However, for the intramolecular hydrogen bonding, due to the experimental and theoretical studies are more complex and difficult to understand the structural rules of the formation of intramolecular hydrogen bonds are not many. The intramolecular hydrogen bonds, especially some conjugated intramolecular hydrogen bonding systems, often show many special properties, and are closely related to some tautomerization processes and the chelation reagents’ selectivity and selectivity. Therefore, the study of the structural rules of intramolecular hydrogen bonding is not only helpful for explaining some phenomena in biology and chemistry, chemical reaction mechanism, but also for designing some new internal hydrogen bonding systems with special properties such as new selective chelation test