Recognition of dicarboxylic acids and diphosphonic acids using anthracene-based diamidine: formation of amidinium-carboxylate and amidinium-phosphonate salt bridges in a protic solvent
作者:Takahiro Kusukawa、Keita Nakaguchi、Saya Nishimura、Akane Nakajima
DOI:10.1080/10610278.2021.1908545
日期:2021.3.4
ABSTRACT The formation of a stable ‘amidinium-carboxylate’ salt bridge, even in a competing protic solvent (MeOH), was observed based on the binding experiments of anthracene-based diamidine (1) and dicarboxylic acids. The formation of 1:1 binding complexes of the diamidine 1 and dicarboxylic acids was confirmed by DOSY NMR, ESI-Mass, titration experiments and a single crystal X-ray analysis. Similarly
摘要 基于蒽基二脒 ( 1 ) 和二羧酸的结合实验,观察到稳定的“脒-羧酸盐”盐桥的形成,即使在竞争性质子溶剂 (MeOH) 中也是如此。通过 DOSY NMR、ESI-Mass、滴定实验和单晶 X 射线分析证实了二脒1和二羧酸的 1:1 结合复合物的形成。类似地,二脒1和二膦酸的络合也证明了 MeOH 溶液中“脒-膦酸盐”盐桥的形成。