{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,12]],"date-time":"2025-01-12T05:17:59Z","timestamp":1736659079784,"version":"3.32.0"},"reference-count":11,"publisher":"International Union of Crystallography (IUCr)","issue":"6","license":[{"start":{"date-parts":[[2009,5,14]],"date-time":"2009-05-14T00:00:00Z","timestamp":1242259200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"},{"start":{"date-parts":[[2009,5,14]],"date-time":"2009-05-14T00:00:00Z","timestamp":1242259200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/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"],"published-print":{"date-parts":[[2009,6,1]]},"abstract":"<jats:p>The title compound, C<jats:sub>20<\/jats:sub>H<jats:sub>26<\/jats:sub>N<jats:sub>4<\/jats:sub>, is composed of two (6-methyl-2-pyridyl)methylene units linked by a 1,6-diamine hexane chain. The molecule has<jats:italic>C<jats:sub>i<\/jats:sub><\/jats:italic>symmetry with the inversion center situated at the mid-point of the central C\u2014C bond. The alkyl chain has an all-<jats:italic>trans<\/jats:italic>conformation, with all the non-H atoms sharing the same plane [maximum deviation 0.004\u2005(3)\u2005\u00c5]. The pyridylmethylene groups are also planar [maximum deviation 0.009\u2005(3)\u2005\u00c5], making an angle of 53.78\u2005(19)\u00b0 with the hexane chain plane. In the crystal, the molecules assemble in layers, stacking along the<jats:italic>a<\/jats:italic>axis. 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