Di-topic hybrid ligands with an isoxazole ring in the central unit: Synthesis, structural characterization and molecular modeling
作者:Bogdan-Ionel Bratanovici、Corneliu Cojocaru、Alina Nicolescu、Mihaela Dascălu、Gheorghe Roman
DOI:10.1016/j.molstruc.2021.131129
日期:2021.12
Two novel ditopic hybrid ligands, useful for the generation of coordination polymers, have been synthesized. These ligands feature an isoxazole ring in their central unit, and have as coordinating moieties a carboxylate group at one end of the central unit, and either a tetrazole or an imidazole at the other end. The structure of the hydrochloride monohydrate of the imidazole–acid has been established
已经合成了两种可用于生成配位聚合物的新型双位杂化配体。这些配体在其中心单元中具有异恶唑环,并且在中心单元的一端具有羧酸盐基团作为配位部分,在另一端具有四唑或咪唑。咪唑酸的盐酸盐一水合物的结构已通过单晶 X 射线衍射确定。咪唑酸的分子结构也在理论上进行了研究。发现优化的分子几何形状与单晶 X 射线衍射(RMSD = 0.2046 Å)确定的结构非常一致。在 DMSO 中在 294 nm 处观察到的实验最大电子吸收带合理地接近 TD-DFT 方法计算的 296 nm 理论波数。能隙(HOMO-LUMO),原子电荷分布,映射静电势;确定并讨论了配体的偶极矩、反应性描述符和计算的振动频率。