A two-dimensional (2D) coordination polymer, [Co(4-dpds)(bdc)(H₂O)₂]·4-dpds (1) (4-dpds = 4,4′-dipyridyldusulfide and bdc²⁻ = dianion of benzenedicarboxylic acid), has been synthesized and structurally determined by single-crystal X-ray diffractometer. In 1, the bdc²⁻ and 4-dpds both act as bridging ligands connecting the Co(II) ions to form a 2D wrinkled-like layered coordination polymer. Two wrinkled-like layered coordination polymers are mutually penetrated to generate a doubly interpenetrated framework, and then extended to its 3D architecture via the supramolecular forces between doubly interpenetrated 2D frameworks and free 4-dpds ligands by intermolecular O–H⋅⋅⋅N hydrogen bonding interaction. Crystal packing arrangements were characterized by fingerprint plots, which were derived from the Hirshfeld Surfaces analysis, and showed that intermolecular hydrogen bonding interactions are the most important interactions on the construction of the crystal 1.

中文翻译：

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二维配位聚合物[Co（4-dpds）（bdc）（H2O）2] 4-dpds的合成，结构表征和Hirshfeld表面分析

二维（2D）配位聚合物[Co（4-dpds）（bdc）（H ₂ O）₂ ]·4-dpds（1）（4-dpds = 4,4'-二吡啶基二硫化物和bdc ^2- =苯二甲酸的二价阴离子），已经合成并通过单晶X射线衍射仪进行结构测定。在1中，bdc ²⁻和4-dpd都充当连接Co（II）离子的桥连配体，形成二维皱纹状分层配位聚合物。两个皱纹状的层状配位聚合物相互渗透，生成一个双互穿的骨架，然后通过双互穿的2D骨架与游离的4-dpd配体之间的超分子力通过分子间O–H·⋅⋅N氢键键合扩展到其3D结构相互作用。晶体堆积的排列通过Hirshfeld表面分析得出的指纹图来表征，并表明分子间氢键相互作用是晶体1的最重要相互作用。