{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T22:55:54Z","timestamp":1770332154037,"version":"3.49.0"},"reference-count":22,"publisher":"International Union of Crystallography (IUCr)","issue":"2","license":[{"start":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T00:00:00Z","timestamp":1768867200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T00:00:00Z","timestamp":1768867200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr E Cryst Commun","Acta Cryst E","Acta Cryst Sect E","Acta Crystallogr E","Acta Crystallogr Sect E","Acta Cryst E Cryst Commun","Acta Cryst Sect E Cryst Commun"],"accepted":{"date-parts":[[2026,1,9]]},"published-print":{"date-parts":[[2026,2,1]]},"abstract":"<jats:p>\n                    The molecule of the title compound, C\n                    <jats:sub>21<\/jats:sub>\n                    H\n                    <jats:sub>14<\/jats:sub>\n                    N\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    S\n                    <jats:sub>2<\/jats:sub>\n                    , is approximately planar except for the terminal carbon atom of the ethyl group. The planarity is promoted by two short intramolecular S...O=C contacts and one intramolecular \u2018weak' C\u2014H...O=C hydrogen bond. The two thiazole rings show some appreciable differences in bond lengths and angles, associated with their different annelation patterns. The molecular packing involves one \u2018weak' hydrogen bond of the type C\u2014H...O=C, which links the molecules in zigzag chains\n                    <jats:italic>via<\/jats:italic>\n                    a 2\n                    <jats:sub>1<\/jats:sub>\n                    screw axis along [010]. Additionally, \u2018stacked' pairs of molecules, necessarily with parallel ring systems, are related by an inversion operator, and two \u03c0 contacts C\u2014H...\u03c0 and C=O...\u03c0 are observed.\n                  <\/jats:p>","DOI":"10.1107\/s2056989026000204","type":"journal-article","created":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T06:51:57Z","timestamp":1768287117000},"page":"182-186","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis and crystal structure of ethyl 2-(1,3-benzothiazol-2-yl)-1-oxo-1\n                    <i>H<\/i>\n                    -pyrido[2,1-\n                    <i>b<\/i>\n                    ][1,3]benzothiazole-4-carboxylate"],"prefix":"10.1107","volume":"82","author":[{"given":"Heba A.","family":"Elboshi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6807-2110","authenticated-orcid":true,"given":"Rasha A.","family":"Azzam","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Galal H.","family":"Elgemeie","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter G.","family":"Jones","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2026,1,20]]},"reference":[{"key":"wm5782_bb1","doi-asserted-by":"crossref","first-page":"19587","DOI":"10.1021\/acsomega.3c01085","volume":"8","author":"Abdallah","year":"2023","journal-title":"ACS Omega"},{"key":"wm5782_bb2","doi-asserted-by":"crossref","first-page":"1874","DOI":"10.1016\/j.ejmech.2011.02.051","volume":"46","author":"Al-Tel","year":"2011","journal-title":"Eur. 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