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Novel Coordination Mode in the Potassium Mefenamate Trihydrate Polymeric Structure
Symmetry ( IF 2.940 ) Pub Date : 2021-09-22 , DOI: 10.3390/sym13101761
Marta S. Krawczyk , Irena Majerz

As a result of the synthesis of mefenamic acid with potassium hydroxide, a salt with a polymeric structure is formed. The one-dimensional polymeric structure was studied by single crystal X-ray diffraction. The potassium cation is coordinated to one oxygen atom of the carboxylate group and six water oxygen atoms. Potassium ions are bridged by oxygen atoms of water molecules. The crystal structure was used as an input to QTAIM and NCI approaches to investigate the K-O interactions linking the cation with the water oxygen and carboxylate groups. The weak K-O interactions of the potassium cation and water oxygen atoms were strong enough to form a polymeric structure. The flexibility of the weak interactions is responsible for a novel coordination mode in the potassium mefenamate trihydrate.

中文翻译:

甲芬酸钾三水合物聚合物结构中的新配位模式

作为甲芬那酸与氢氧化钾合成的结果,形成具有聚合结构的盐。通过单晶X射线衍射研究了一维聚合物结构。钾阳离子与羧酸根的一个氧原子和六个水氧原子配位。钾离子由水分子的氧原子桥接。晶体结构被用作 QTAIM 和 NCI 方法的输入,以研究将阳离子与水氧和羧酸根基团连接起来的 KO 相互作用。钾阳离子和水氧原子的弱 KO 相互作用强到足以形成聚合物结构。弱相互作用的灵活性是造成甲芬酸钾三水合物中新型配位模式的原因。
更新日期:2021-09-22
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