2,6-Bis(2-methyl-1,3-diazinan-2-yl)pyridine

作者：Ton Quoc Cuong; Bolte Michael^*

来源：Acta Crystallographica Section E-Structure Reports Online, 2011, 67: O41-U1650.

DOI：10.1107/S1600536810050063

The title compound, C15H25N5, is an aminalization product between 2,6-diacetylpyridine and 1,3-diaminopropane. It crystallizes with two independent molecules in the asymmetric unit with different conformations. In the first molecule, the methyl groups are cis oriented with respect to the pyridine ring [N-C-C-C torsion angles = 72.5 (1) and 80.3 (1)degrees], while they are trans oriented in the second molecule [N-C-C-C torsion angles = 82.6 (1) and -90.8 (1)degrees]. Each of the two molecules forms centrosymmetric dimers held together by N-H center dot center dot center dot N hydrogen bonds, thus forming R-2(2)(16) rings. The two dimers are interlinked by additional N-H center dot center dot center dot N bonds into R-4(4)(14) rings, building chains along the a axis. These patterns influence the orientation (either equatorial or axial) of the N-H bonds.

• 出版日期2011-1