立体化学中的手性理论解决了什么样的分子结构才具有旋光性,并能解释立体化学中的大部分问题。因此,不少人认为手性理论已十分完善,有关立体化学的基本理论已无进一步研究的必要。但是,只要我们仔细推敲就会发现,手性只是旋光性的必要条件,但不是充分条件,许多手性分子有两个 The theory of chirality in stereochemistry solves what kind of molecular structure is optically active and can account for most of the problems in stereochemistry. Therefore, many people think that the chiral theory has been perfect, and the basic theory of stereochemistry has no need for further research. However, as long as we scrutinize it, we find that chirality is a necessary but not sufficient condition for optical activity. Many chiral molecules have two