天然有机分子精细立体结构规律的初步研究Ⅱ．影响熔点的结构因素

Fine Stereo Structure for Natural Organic Molecules, a Preliminary Study Ⅱ. Melting Point Influenced by Structure Factors

应用Ｘ衍射方法测定雷公藤两个化合物的晶体结构，并对影响固体熔点的结构因素进行分析。晶型（或空间对称群）、结晶溶剂、分子间作用力及分子构象的精细变化均可导致晶态物质的熔点变化。

Crystal structures of two compounds from Tripterygium wilfordii Hook f.have been determined by X-ray diffraction method. Structure factors influcing melting point of solid state have been analysed. Crystal class(or space group), recrystallization solvent, force between molecules and fine changes of molecular structures will all cause melting point changes of crystal substance.