摘要
当个主要依据X光等衍射方法测定晶体结构以判断类质同晶和同质多晶现象。在形式化学式相同或相似的前提下，关键在于正确判断晶体的空间群。本文通过实例枚举类质同晶和同质多晶这一常见现象以及由于空间群指定失误等原因导致有关判断的不同结论。
The present-day investigations of isomorphism and polymorphism are mainly based on X-rayand other diffraction data. Under the prerequisite of iso-or near isoformula, space group discrim-ination is of crucial importance in deciding whether the crystals are isomorphic or polymorphic. Inthis paper, a scries of isomophism and polymorphism as well as those with space group revisionsare enumeratcd.
关键词
空间群判断
类质同晶
同晶型
多晶型
同质多晶
isomorphism, isostructure, polymorphism, space group discrimination
