Disappearing and reappearing polymorphs—an anathema to crystal engineering?
Disappearing and reappearing polymorphs—an anathema to crystal engineering?
复制标题
消失和重新出现的多晶型物——晶体工程的诅咒？
DOI：
10.1016/s0025-5408(98)00086-5
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
J. Henck
中科院分区：
文献类型：
--
作者：
J. Bernstein;J. Henck
“晶体工程”意味着对所需晶体结构的设计和制备的控制。这种控制可能会因所讨论的化合物的多晶型物的存在或出现而受到损害。重新获得控制需要了解获得材料的每种晶型的条件。化学显微镜可用于确定这些条件。回顾了热显微方法的历史重要性，并提出了许多将热显微观察结果转化为适合 X 射线研究的单晶的例子。
“Crystal engineering” implies control over the design and preparation of desired crystal structures. That control can be compromised by the existence or appearance of polymorphs for the compound in question. Regaining control requires an understanding of the conditions for obtaining each of the crystalline forms of the material. Chemical microscopy can be useful in determining those conditions. The historic importance of thermomicroscopic methods is reviewed and a number of examples of translating thermomicroscopic observations into single crystals suitable for X-ray study are presented.