{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T20:56:54Z","timestamp":1773003414436,"version":"3.50.1"},"reference-count":0,"publisher":"International Union of Crystallography (IUCr)","issue":"1","license":[{"start":{"date-parts":[[2003,1,28]],"date-time":"2003-01-28T00:00:00Z","timestamp":1043712000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},{"start":{"date-parts":[[2003,1,28]],"date-time":"2003-01-28T00:00:00Z","timestamp":1043712000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html#TDM"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr B Struct Sci","Acta Cryst B","Acta Cryst Sect B","Acta Crystallogr B","Acta Crystallogr Sect B","Acta Crystallogr Sect B Struct Sci"],"accepted":{"date-parts":[[2002,12,10]]},"published-print":{"date-parts":[[2003,2,1]]},"abstract":"<jats:p>[2+2]Photodimerization of the title compound, C<jats:sub>19<\/jats:sub>H<jats:sub>20<\/jats:sub>ClNO<jats:sub>3<\/jats:sub>, has been observed <jats:italic>in situ<\/jats:italic> by single-crystal X-ray diffraction. Pairs of monomers related by centers of symmetry have parallel C=C bonds at a C...C distance of 4.155\u2005(17)\u2005\u00c5. Irradiation of a single crystal with a mercury lamp achieves 100% conversion to the dimer. Redetermination of the structure during the course of the reaction revealed a linear correlation between the percent conversion to the dimer and the decrease in the cell volume. The displacement parameters for the pure dimer structure are substantially smaller than those for the pure monomer structure. The dimerization reaction is also induced by irradiation with X-rays, the induction being stronger with Cu\u2005<jats:italic>K<\/jats:italic>\u03b1 than with Mo\u2005<jats:italic>K<\/jats:italic>\u03b1 radiation.<\/jats:p>","DOI":"10.1107\/s0108768102022760","type":"journal-article","created":{"date-parts":[[2003,1,29]],"date-time":"2003-01-29T13:27:28Z","timestamp":1043846848000},"page":"149-155","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":26,"title":["Single-crystal-to-single-crystal photodimerization of 4-chlorocinnamoyl-<i>O<\/i>,<i>O<\/i>'-dimethyldopamine"],"prefix":"10.1107","volume":"59","author":[{"given":"Shigeru","family":"Ohba","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshikatsu","family":"Ito","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2003,1,28]]},"container-title":["Acta Crystallographica Section B Structural Science"],"original-title":[],"link":[{"URL":"http:\/\/journals.iucr.org\/b\/issues\/2003\/01\/00\/bm0063\/bm0063.pdf","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.iucr.org\/b\/issues\/2003\/01\/00\/bm0063\/bm0063.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,1,10]],"date-time":"2025-01-10T13:16:15Z","timestamp":1736514975000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.iucr.org\/paper?S0108768102022760"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2003,1,28]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2003,2]]}},"alternative-id":["S0108768102022760"],"URL":"https:\/\/doi.org\/10.1107\/s0108768102022760","relation":{"is-supplemented-by":[{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063sup1.cif","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Iasup2.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Ibsup3.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063IIsup4.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Icsup5.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Idsup6.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Iesup7.hkl","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S0108768102022760\/bm0063Ifsup8.hkl","asserted-by":"subject"}]},"ISSN":["0108-7681"],"issn-type":[{"value":"0108-7681","type":"print"}],"subject":[],"published":{"date-parts":[[2003,1,28]]},"assertion":[{"value":"Acta Crystallographica Section B: Structural Science","order":0,"name":"journal","label":"Publication","explanation":{"URL":"http:\/\/journals.iucr.org\/b"},"group":{"name":"general","label":"General"}},{"value":"research papers","order":1,"name":"content_type","label":"Content type","explanation":{"URL":"https:\/\/journals.iucr.org\/b\/services\/notesforauthors.html"},"group":{"name":"general","label":"General"}},{"value":"Available","URL":"http:\/\/scripts.iucr.org\/cgi-bin\/citedin?bm0063","order":2,"name":"article_metrics","label":"Article metrics","group":{"name":"general","label":"General"}},{"value":"Yes","order":0,"name":"peer_reviewed","label":"Peer reviewed","group":{"name":"peer_review","label":"Peer review"}},{"value":"Single blind","order":1,"name":"review_process","label":"Review process","group":{"name":"peer_review","label":"Peer review"}},{"value":"28 October 2002","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication history"}},{"value":"10 December 2002","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication history"}},{"value":"28 January 2003","order":2,"name":"published_online","label":"Published online","group":{"name":"publication_history","label":"Publication history"}},{"value":"This article has supporting information","name":"supplementary_materials","label":"Supplementary materials","explanation":{"URL":"http:\/\/scripts.iucr.org\/cgi-bin\/sendsup?bm0063"}},{"value":"\u00a9 2003 International Union of Crystallography","order":0,"name":"copyright","label":"Copyright","explanation":{"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},"group":{"name":"copyright_and_licensing","label":"Copyright and licencing"}}]}}