Two complexes based on isophthalic acid ligand were successfully synthesized and structurally characterized. Compound 1 exhibits a three-dimensional supramolecular structure. It is assembled from L3− ligands to form a 2D layer with the water ligands orientated above and below each layer. Adjacent layers are connected through hydrogen bonding between carboxylic groups and coordinated, free water molecules to generate a three-dimensional supramolecular structure. The structure of compound 2 consists of tetranuclear cobalt clusters which were linked by the acid ligands to generate a layered structure. Neighboring layers are further connected through bpp ligands to form a three-dimensional structure. The variable-temperature magnetic susceptibility data show that complexes 1 and 2 exhibit antiferromagnetic interactions.

中文翻译：

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5-(4-(1-(羧甲基)-1H-吡唑-3-基)苯基)间苯二甲酸配体衍生的钴(II)配合物的合成、结构和磁性

成功合成了两种基于间苯二甲酸配体的配合物并对其进行了结构表征。化合物1表现出三维超分子结构。它由 L3− 配体组装形成一个二维层，水配体位于每层的上方和下方。相邻层通过羧基和协调的自由水分子之间的氢键连接，产生三维超分子结构。化合物2的结构由四核钴簇组成，通过酸配体连接形成层状结构。相邻层通过bpp配体进一步连接，形成三维结构。变温磁化率数据表明配合物1和2表现出反铁磁相互作用。