Dorset D L, Hancock A J
Z Naturforsch C Biosci. 1977 Jul-Aug;32(7-8):513-80.
Transmission electron diffraction is used as a qualitative analytical probe of polymethylene chain packing in three conformationally-restricted analogs of tripalmitin derived from configurational isomers of cyclopentane-1,2,3-triol. The analysis demonstrates that the all trans "tuning-fork" conformation seen in X-ray crystal structure analyses on homologous compounds is also found in microcrystals, in contrast to a proposal by Fringeli et al. (Z. Naturforsch. 27b, 780 [1972]) that an all cis conformation of the triglyceride exists in solvent-grown microcrystals and in multilayers. The presence of mixed polymorphs is also shown for bulk samples previously examined by X-ray powder diffraction techniques by other workers.
透射电子衍射被用作一种定性分析探针，用于研究从环戊烷 -1,2,3 -三醇的构型异构体衍生而来的三棕榈酸甘油酯的三种构象受限类似物中的聚亚甲基链堆积情况。分析表明，在同源化合物的X射线晶体结构分析中看到的全反式“音叉”构象在微晶中也能找到，这与Fringeli等人（《自然科学学报》27b，780 [1972]）的提议相反，他们认为甘油三酯的全顺式构象存在于溶剂生长的微晶和多层膜中。其他研究人员先前通过X射线粉末衍射技术检测的大量样品也显示出混合多晶型物的存在。
