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The central seven-membered ring adopts a distorted chair form. In the 7-oxabicyclo[2.2.1]hepta-2,5-diene unit, the five-membered rings adopt envelope conformations. In the crystal, the molecules are linked by C\u2014H...O and C\u2014H...F interactions, forming sheets parallel to the (002) plane. Additionally, S\u2014O...\u03c0 and \u03c0\u2013\u03c0 interactions [centroid-to-centroid distance = 3.6159\u2005(7)\u2005\u00c5] connect the molecules along the <jats:italic>a-<\/jats:italic>axis direction. van der Waals interactions between the molecular sheets reinforce the molecular packing. A Hirshfeld surface analysis was conducted to visualize the various intermolecular interactions, indicating that the largest contribution to the surface contacts is from H...H interactions (37.3%), followed by O...H\/H...O (24.1%), F...H\/H...F (19.0%), and C...H\/H...C (10.3%) interactions.<\/jats:p>","DOI":"10.1107\/s2056989025004426","type":"journal-article","created":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T07:01:04Z","timestamp":1747983664000},"page":"543-548","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["Crystal structure and Hirshfeld surface analysis of dimethyl 3-methyl-8-{[4-(trifluoromethyl)phenyl]sulfonyl}-7,8-dihydro-4<i>H<\/i>-4,6a-epoxybenzo[<i>b<\/i>]naphtho[1,8-<i>de<\/i>]azepine-5,6-dicarboxylate"],"prefix":"10.1107","volume":"81","author":[{"given":"Gleb M.","family":"Burkin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Selbi","family":"Annadurdyyeva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandra G.","family":"Kutasevich","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Narmina A.","family":"Guliyeva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Khudayar I.","family":"Hasanov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2421-0929","authenticated-orcid":true,"given":"Mehmet","family":"Akkurt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6098-9450","authenticated-orcid":true,"given":"Gizachew Mulugeta","family":"Manahelohe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2025,5,23]]},"reference":[{"key":"nx2026_bb1","doi-asserted-by":"crossref","first-page":"1555","DOI":"10.1002\/anie.199515551","volume":"34","author":"Bernstein","year":"1995","journal-title":"Angew. 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