Lin Yue-Qun, Tian Xiao-Mao, Xiong Ying, Huang Chao, Chen Dong-Mei, Zhu Bi-Xue
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
School of Chemistry and Materials, Guizhou Normal University, Guiyang 550025, China.
Inorg Chem. 2023 Dec 11;62(49):19887-19897. doi: 10.1021/acs.inorgchem.3c01747. Epub 2023 Nov 29.
A racemic bispyridyl ligand () was synthesized via a Schiff base condensation reaction. Four Cd(II) complexes, {[CdCl]·2DMF} (), [CdI] (), {[CdBr]·4HO} (), and {Cd(HO)·2CHOH·8HO} (), were synthesized and further characterized based on this ligand. Single-crystal structures show that the coordination-driven assembly of the bispyridyl ligand with Cd(II) salts bearing different counteranions can lead to multidimensional coordination polymers via a heterochiral self-discrimination process. Complex exists as a one-dimensional (1D) looped chain polymer, and complex exists as a 1D zigzag chain polymer. Complex is a 2D grid coordination polymer, and complex exists as a 3D framework polymer. Furthermore, the iodine sorption capacities of the four complexes were investigated in the solution of -hexane and water as well as in the iodine steam. The dye sorption behaviors were investigated in water, which showed that complex exhibited good adsorption for crystal violet (), while complex had good adsorption capability toward direct yellow 4 ().
通过席夫碱缩合反应合成了一种外消旋双吡啶配体（）。基于该配体合成了四种镉（II）配合物，{[CdCl]·2DMF}（）、[CdI]（）、{[CdBr]·4HO}（）和{Cd(HO)·2CHOH·8HO}（），并对其进行了进一步表征。单晶结构表明，双吡啶配体与带有不同抗衡阴离子的镉（II）盐通过异手性自识别过程进行配位驱动组装可形成多维配位聚合物。配合物以一维（1D）环状链聚合物形式存在，配合物以1D锯齿链聚合物形式存在。配合物是二维网格配位聚合物，配合物以三维骨架聚合物形式存在。此外，研究了这四种配合物在正己烷和水的溶液以及碘蒸汽中的碘吸附容量。在水中研究了染料吸附行为，结果表明配合物对结晶紫（）表现出良好的吸附性能，而配合物对直接黄4（）具有良好的吸附能力。
