Tweezer-type molecules with an ester linkage between catechol or resorcinol and linear amino acid-based urea or amide derivatives are prepared. X-ray structures of representative compounds show, that the molecules are able to form intra- as well as intermolecular hydrogen bonds. In solution this hydrogen bonding donor/acceptor ability of the tweezers can he seen, on the one hand by interaction with
制备了在儿茶酚或间苯二酚与线性氨基酸基脲或酰胺衍生物之间具有酯键的镊子型分子。代表性化合物的 X 射线结构表明,分子能够形成分子内和分子间的氢键。在溶液中,可以看到镊子的这种氢键供体/受体能力,一方面是通过与阴离子客体物质(硝酸盐)的相互作用,另一方面是在尿素衍生物的情况下形成凝胶。