| Summary: | A two-dimensional (2D) coordination polymer, [Co(4-dpds)(bdc)(H<sub>2</sub>O)<sub>2</sub>]·4-dpds (<b>1</b>) (4-dpds = 4,4′-dipyridyldusulfide and bdc<sup>2−</sup> = dianion of benzenedicarboxylic acid), has been synthesized and structurally determined by single-crystal X-ray diffractometer. In <b>1</b>, the bdc<sup>2−</sup> 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 <b>1</b>.
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