As hydrogen-bonding hosts with a partially flexible framework, two types of tetrahydroxy compounds with respectively convergent and divergent arrays of hydroxy groups were prepared. The structures of the tetraol with a diethyleneoxy bridge (1a), and that with a m-phenylenedioxy bridge (syn-13a and anti-13b) were determined by X-ray crystallographic studies. syn-13a forms an inclusion crystal with 1,4-dioxane, one molecule of which is bound in the cleft of syn-13a and the other in the intermolecular cavity.
作为具有部分柔性框架的氢键主体,制备了两类四羟基化合物,它们的羟基分别呈收敛排列和发散排列。通过X射线晶体学研究,确定了
二乙二醇桥连的四醇(1a)和间苯二氧桥连的四醇(syn-13a和anti-13b)的结构。syn-13a形成了一种包合物晶体与1,4-
二恶烷,其中一个分子被结合在syn-13a的裂隙中,另一个分子位于分子间的腔隙中。