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Single-crystal X-ray diffraction indicates that the most interesting aspect of the structure is the existence of sole <jats:italic>trans<\/jats:italic> and <jats:italic>cis<\/jats:italic> conformations of the bibp ligand in a single net of (I) and (II), respectively. Compound (I) displays a threefold interpenetrating three-dimensional framework with a 4-connected {6<jats:sup>5<\/jats:sup>.8} <jats:bold>cds<\/jats:bold> topology, whereas (II) features a one-dimensional chain structure. In the crystal of (II), the polymeric chains are further extended through C\u2014H...O hydrogen bonds and C\u2014H...\u03c0 interactions into a three-dimensional supramolecular architecture. In addition, strong intramolecular O\u2014H...O hydrogen bonds formed between the bridging water molecules and the carboxylate O atoms improve the stability of the framework of (II). Furthermore, solid-state UV\u2013Vis spectroscopy experiments show that compounds (I) and (II) exhibit optical band gaps which are characteristic for optical semiconductors, with values of 2.70 and 2.26\u2005eV, respectively.<\/jats:p>","DOI":"10.1107\/s2053229619016024","type":"journal-article","created":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T12:41:20Z","timestamp":1575636080000},"page":"37-43","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":2,"title":["One-pot concomitant preparation of two copper(II) coordination polymers with different configurations of bridging bithiophene ligands"],"prefix":"10.1107","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2980-4243","authenticated-orcid":true,"given":"Zhi-Qiang","family":"Shi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ning-Ning","family":"Ji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hai-Liang","family":"Hu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2020,1,1]]},"reference":[{"key":"lf3106_bb1","doi-asserted-by":"crossref","first-page":"1349","DOI":"10.1039\/DT9840001349","author":"Addison","year":"1984","journal-title":"J. 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