Urotropine is a cheap and promising ligand for the synthesis of metal-organic frameworks containing uncoordinated nitrogen atoms. The reactions between urotropine, dicarboxylic acids, and zinc(II) or cobalt(II) salts were studied. The optimization of the reaction conditions allows the synthesis of three urotropine-containing metal-organic frameworks, [Zn(ur)(abdc)]• •DMF•H 2 O ( 1 , ur is urotropine, abdc 2− is 4,4´-diazobiphenyldicarboxylate, DMF is N , N -dimethylformamide), (CH 3 ur)[NaCo(dmf) 2 (bptc)] ( 2 , CH 3 ur+ is N -methylhexa methyl enetetrammonium, bptc 4− is 2,2´,4,4´-biphenyltetracarboxylate), and [Co 4 (dmf)(ur) 2 (ndc) 4 ]•5DMF ( 3 , ndc 2− is 2,6-naphthalenedicarboxylate). These compounds were structurally characterized and their thermal and adsorption properties were studied. In the three compounds, urotropine performs diff erent functions, acting as a monodentate ligand (compound 1 ), a bidentate ligand (compound 3 ), or a methylammonium counterion (compound 2 ).

中文翻译：

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乌洛托品作为有效合成金属有机骨架的配体

乌洛托品是一种廉价且有前景的配体，用于合成含有未配位氮原子的金属有机骨架。研究了乌洛托品、二羧酸和锌 (II) 或钴 (II) 盐之间的反应。反应条件的优化允许合成三种含乌洛托品的金属有机骨架，[Zn(ur)(abdc)]• •DMF•H 2 O ( 1 , ur 是乌洛托品，abdc 2− 是 4,4´ -diazobiphenyldicarboxylate, DMF 是 N , N - 二甲基甲酰胺), (CH 3 ur)[NaCo(dmf) 2 (bptc)] ( 2 , CH 3 ur+ 是 N -甲基六甲基烯四铵, bptc 4− 是 2,2´,4 ,4´-联苯四羧酸酯) 和 [Co 4 (dmf)(ur) 2 (ndc) 4 ]•5DMF ( 3 , ndc 2− 是 2,6-萘二甲酸酯)。对这些化合物进行了结构表征并研究了它们的热和吸附性能。在三个化合物中，