自量子力学建立以来,对原子和分子结构和性质的研究获得了巨大的进展,从微观层次上考察核和电子的运动,以及与这些运动有关的物质和能量的变化等课题,引起了化学家们极大的关注。这一领域中取得的成就无疑是本世纪科学发展的重大事件之一,它改变了并正在继续改变着化学的面貌。信息的概念是二十世纪科学中出现的另一个重要概念。按N.Wiener的意见:“信息既 Since the establishment of quantum mechanics, tremendous progress has been made in the study of the structure and properties of atoms and molecules. Examining the movement of nuclei and electrons at the micro level and the changes of matter and energy related to these movements has caused the chemists They are great concern. Achievements in this area are undoubtedly one of the major events in the scientific development of this century, which have changed and are continuing to change the face of chemistry. The concept of information is another important concept that emerged in twentieth-century science. According to N. Wiener’s comment: "Information is both