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This complex consists of discrete binuclear molecules with a {Cu<jats:sub>2<\/jats:sub>(\u03bc<jats:sub>2<\/jats:sub>-Cl)<jats:sub>2<\/jats:sub>} core, in which the Cu...Cu distance is 3.8002\u2005(7)\u2005\u00c5. The pyrazole-based ligands are bidentate coordinated, leading to the formation of two five-membered chelate rings. The coordination geometry of both copper atoms (ON<jats:sub>2<\/jats:sub>Cl<jats:sub>3<\/jats:sub>) can be described as distorted octahedral on account of the acetonitrile coordination. A Hirshfeld surface analysis suggests that the most important contributions to the surface contacts are from H...H (40%), H...Cl\/Cl...H (24.3%), H...O\/O...H (11.8%), H...C\/C...H (9.2%) and H...N\/N...H (8.3%) interactions.<\/jats:p>","DOI":"10.1107\/s2056989021010653","type":"journal-article","created":{"date-parts":[[2021,10,26]],"date-time":"2021-10-26T07:55:49Z","timestamp":1635234949000},"page":"1153-1157","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":1,"title":["Crystal structure and Hirshfeld surface analysis of di-\u03bc-chlorido-bis[(acetonitrile-\u03ba<i>N<\/i>)chlorido(ethyl 5-methyl-1<i>H<\/i>-pyrazole-3-carboxylate-\u03ba<sup>2<\/sup>\n                  <i>N<\/i>\n                  <sup>2<\/sup>,<i>O<\/i>)copper(II)]"],"prefix":"10.1107","volume":"77","author":[{"given":"Oleksandr S.","family":"Vynohradov","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vadim A.","family":"Pavlenko","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olesia I.","family":"Kucheriv","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irina A.","family":"Golenya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denys","family":"Petlovanyi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1222-4373","authenticated-orcid":true,"given":"Sergiu","family":"Shova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2021,10,26]]},"reference":[{"key":"zq2267_bb1","doi-asserted-by":"crossref","first-page":"5347","DOI":"10.1021\/ic800509f","volume":"47","author":"Chandrasekhar","year":"2008","journal-title":"Inorg. 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