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在有机化学的教学中讨论到旋光异构时,同学们提出的问题很多,其性质如:1)内消旋酒石酸分子中的两个不对称碳原子的构型是相同的,还是不相同的? 2)实际的分子立体结构与其投影结构式之间的关系是怎样的? 3)为何旋光性化合物的投影结构式只能在一平面内转动,而不能任意翻转? 4)开链的内消旋化合物,为何有的有中心对称因素,又有平面对称因素,而有的则只有平面对
When discussing the optical isomerization in the teaching of organic chemistry, the students raised a lot of questions, of which the nature is as follows: 1) The configurations of the two asymmetric carbon atoms in the meso-tartaric acid molecule are the same or different 2) What is the relationship between the actual molecular structure and its projection structure? 3) Why does the projection structure of an optically active compound only rotate in a plane and can not be reversed? 4) The open-chain mesogenic compound , Why some of the central symmetry factors, there are planar symmetry factors, while others are only plane