{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T18:19:07Z","timestamp":1759515547876,"version":"3.32.0"},"reference-count":7,"publisher":"International Union of Crystallography (IUCr)","issue":"9","license":[{"start":{"date-parts":[[2008,8,30]],"date-time":"2008-08-30T00:00:00Z","timestamp":1220054400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"},{"start":{"date-parts":[[2008,8,30]],"date-time":"2008-08-30T00:00:00Z","timestamp":1220054400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr E Struct Rep Online","Acta Crystallogr E","Acta Cryst E","Acta Cryst E Struct Rep Online","Acta Cryst Sect E","Acta Cryst Sect E Struct Rep Online","Acta Crystallogr Sect E","Acta Crystallogr Sect E Struct Rep Online"],"accepted":{"date-parts":[[2008,8,25]]},"published-print":{"date-parts":[[2008,9,1]]},"abstract":"<jats:p>The reaction of chromium(III) nitrate hexahydrate, pyridine-2,6-diamine and 4-hydroxypyridine-2,6-dicarboxylic acid in a 1:2:2 molar ratio in aqueous solution resulted in the formation of the title compound, (C<jats:sub>5<\/jats:sub>H<jats:sub>8<\/jats:sub>N<jats:sub>3<\/jats:sub>)[Cr(C<jats:sub>7<\/jats:sub>H<jats:sub>3<\/jats:sub>NO<jats:sub>5<\/jats:sub>)<jats:sub>2<\/jats:sub>]\u00b72H<jats:sub>2<\/jats:sub>O or (pydaH)[Cr(hypydc)<jats:sub>2<\/jats:sub>]\u00b72H<jats:sub>2<\/jats:sub>O (where pyda is pyridine-2,6-diamine and hypydcH<jats:sub>2<\/jats:sub> is 4-hydroxypyridine-2,6-dicarboxylic acid). Each Cr<jats:sup>III <\/jats:sup>atom is hexacoordinated by four O and two N atoms from two (hypydc)<jats:sup>2\u2212<\/jats:sup> fragments, which act as tridentate ligands, in a distorted octahedral geometry. The O\u2014Cr\u2014O\u2014C torsion angles between the two planes of the (hypydc)<jats:sup>2\u2212<\/jats:sup> fragments [\u221299.81\u2005(17) and 97.77\u2005(17)\u00b0] indicate that these two units are almost perpendicular to one another. In the crystal structure, extensive O\u2014H...O, N\u2014H...O and C\u2014H...O hydrogen bonds with <jats:italic>D<\/jats:italic>...<jats:italic>A<\/jats:italic> distances ranging from 2.560\u2005(2) to 3.279\u2005(3)\u2005\u00c5, ion pairing, C\u2014O...\u03c0 [O...\u03c0 = 3.166\u2005(2)\u2005\u00c5] and \u03c0\u2013\u03c0 stacking interactions between (hypydc)<jats:sup>2\u2212<\/jats:sup> and (pydaH)<jats:sup>+<\/jats:sup> rings [with a centroid\u2013centroid distance of 3.3353\u2005(14)\u2005\u00c5] contribute to the formation of a three-dimensional supramolecular structure.<\/jats:p>","DOI":"10.1107\/s1600536808027347","type":"journal-article","created":{"date-parts":[[2008,8,29]],"date-time":"2008-08-29T19:10:27Z","timestamp":1220037027000},"page":"m1208-m1209","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":8,"title":["2,6-Diaminopyridinium bis(4-hydroxypyridine-2,6-dicarboxylato-\u03ba<sup>3<\/sup>\n                  <i>O<\/i>\n                  <sup>2<\/sup>,<i>N<\/i>,<i>O<\/i>\n                  <sup>6<\/sup>)chromate(III) dihydrate"],"prefix":"10.1107","volume":"64","author":[{"given":"Hossein","family":"Aghabozorg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leila","family":"Roshan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Najmeh","family":"Firoozi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammad","family":"Ghadermazi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara","family":"Bagheri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2008,8,30]]},"reference":[{"key":"ym2072_bb1","doi-asserted-by":"crossref","first-page":"m1917","DOI":"10.1107\/S1600536807028115","volume":"63","author":"Aghabozorg","year":"2007","journal-title":"Acta Cryst. 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E"}],"container-title":["Acta Crystallographica Section E Structure Reports Online"],"original-title":[],"link":[{"URL":"https:\/\/journals.iucr.org\/e\/issues\/2008\/09\/00\/ym2072\/ym2072.pdf","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.iucr.org\/e\/issues\/2008\/09\/00\/ym2072\/ym2072.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,1,11]],"date-time":"2025-01-11T15:06:56Z","timestamp":1736608016000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.iucr.org\/paper?S1600536808027347"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,8,30]]},"references-count":7,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2008,9]]}},"alternative-id":["S1600536808027347"],"URL":"https:\/\/doi.org\/10.1107\/s1600536808027347","relation":{"is-supplemented-by":[{"id-type":"doi","id":"10.1107\/S1600536808027347\/ym2072sup1.cif","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S1600536808027347\/ym2072sup0.html","asserted-by":"subject"},{"id-type":"doi","id":"10.1107\/S1600536808027347\/ym2072Isup2.hkl","asserted-by":"subject"}]},"ISSN":["1600-5368"],"issn-type":[{"type":"electronic","value":"1600-5368"}],"subject":[],"published":{"date-parts":[[2008,8,30]]},"assertion":[{"value":"Acta Crystallographica Section E: Structure Reports Online","order":0,"name":"journal","label":"Publication","explanation":{"URL":"https:\/\/journals.iucr.org\/e"},"group":{"name":"general","label":"General"}},{"value":"metal-organic compounds","order":1,"name":"content_type","label":"Content type","explanation":{"URL":"https:\/\/journals.iucr.org\/e\/services\/notesforauthors.html"},"group":{"name":"general","label":"General"}},{"value":"Available","URL":"https:\/\/scripts.iucr.org\/cgi-bin\/citedin?ym2072","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":"6 August 2008","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication history"}},{"value":"25 August 2008","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication history"}},{"value":"30 August 2008","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":"https:\/\/scripts.iucr.org\/cgi-bin\/sendsup?ym2072"}},{"value":"\u00a9 2008 Aghabozorg et al.","order":0,"name":"copyright","label":"Copyright","explanation":{"URL":"https:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},"group":{"name":"copyright_and_licencing","label":"Copyright and licencing"}},{"value":"Creative Commons Attribution (CC-BY)","order":1,"name":"license","label":"Licence","explanation":{"URL":"https:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"},"group":{"name":"copyright_and_licencing","label":"Copyright and licencing"}}]}}