{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T11:14:03Z","timestamp":1791112443518,"version":"4.1.0"},"reference-count":30,"publisher":"International Union of Crystallography (IUCr)","issue":"1","license":[{"start":{"date-parts":[[2013,12,7]],"date-time":"2013-12-07T00:00:00Z","timestamp":1386374400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},{"start":{"date-parts":[[2013,12,7]],"date-time":"2013-12-07T00:00:00Z","timestamp":1386374400000},"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 C Struct Chem","Acta Crystallogr C","Acta Crystallogr C Cryst Struct Commun","Acta Cryst C","Acta Cryst C Struct Chem","Acta Cryst Sect C","Acta Cryst Sect C Struct Chem","Acta Crystallogr Sect C","Acta Crystallogr Sect C Struct Chem","Acta Crystallogr Sect C Cryst Struct Commun"],"published-print":{"date-parts":[[2014,1,1]]},"abstract":"<jats:p>The title compound, [KCr(C<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub>)<jats:sub>2<\/jats:sub>(C<jats:sub>6<\/jats:sub>H<jats:sub>8<\/jats:sub>N<jats:sub>2<\/jats:sub>)]<jats:sub><jats:italic>n<\/jats:italic><\/jats:sub>, was obtained from aqueous solution and analyzed with single-crystal X-ray diffraction at 100\u2005K. It crystallizes in the monoclinic space group<jats:italic>C<\/jats:italic>2\/<jats:italic>c<\/jats:italic>and displays a three-dimensional polymeric architecture built up by bimetallic oxalate-bridged Cr<jats:sup>III<\/jats:sup>\u2013K helical chains linked through centrosymmetric K<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub>units to yield a sheet-like alternating<jats:italic>P<\/jats:italic>\/<jats:italic>M<\/jats:italic>arrangement which looks like that of the previously described two-dimensional [NaCr(ox)<jats:sub>2<\/jats:sub>(pyim)(H<jats:sub>2<\/jats:sub>O)]\u00b72H<jats:sub>2<\/jats:sub>O [pyim is 2-(pyridin-2-yl)imidazole; Lei<jats:italic>et al.<\/jats:italic>(2006).<jats:italic>Inorg. Chem. Commun.<\/jats:italic><jats:bold>9<\/jats:bold>, 486\u2013488]. The Cr<jats:sup>III<\/jats:sup>ions in each helix have the same chirality. The infinite neutral sheets are eclipsed with respect to each other and are held together by a hydrogen-bonding network involving 2-(aminomethyl)pyridine H atoms and oxalate O atoms. Each sheet gives rise to channels of Cr<jats:sub>4<\/jats:sub>K<jats:sub>4<\/jats:sub>octanuclear rings and each resultant hole is occupied by a pair of 2-(aminomethyl)pyridine ligands with partial overlap. The shortest Cr...Cr distance [5.593\u2005(4)\u2005\u00c5] is shorter than usually observed in the K\u2013<jats:italic>M<\/jats:italic><jats:sup>III<\/jats:sup>\u2013oxalate family.<\/jats:p>","DOI":"10.1107\/s205322961303088x","type":"journal-article","created":{"date-parts":[[2013,12,6]],"date-time":"2013-12-06T14:55:55Z","timestamp":1386341755000},"page":"12-15","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":5,"title":["A new heteroleptic oxalate-based compound: poly[[2-(aminomethyl)pyridine]di-\u03bc<sub>6<\/sub>-oxalato-chromium(III)potassium(I)]"],"prefix":"10.1107","volume":"70","author":[{"given":"Patrice","family":"Kenfack Tsobnang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel","family":"Wenger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sim\u00e9on","family":"Ponou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Slimane","family":"Dahaoui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Lambi Ngolui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claude","family":"Lecomte","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2013,12,7]]},"reference":[{"key":"qs3032_bb1","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1107\/S0108768102003890","volume":"58","author":"Allen","year":"2002","journal-title":"Acta Cryst. 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