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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of 2,3′-bi­pyridine-2′,6′-dicarbo­nitrile
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Crystal structure of 2,3′-bi­pyridine-2′,6′-dicarbo­nitrile

机译:2,3'-联吡啶-2',6'-二腈的晶体结构

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The title compound, C12H6N4, crystallizes with four independent mol­ecules (A, B, C and D) in the asymmetric unit. The dihedral angles between the two pyridine rings in each mol­ecule are 25.25 (8)° in A, 5.51 (9)° in B, 11.11 (9)° in C and 16.24 (8)° in D. In the crystal, mol­ecules A and B are linked by C—H⋯N hydrogen bonds to form layers extending parallel to the ab plane, while mol­ecules C and D are linked by C—H⋯N hydrogen bonds forming –C–D–C–D– chains propagating along the b-axis direction. The layers and the chains are stacked alternately along the c axis through offset π–π and C≡N⋯π [N-to-pyridine-centroid distance = 3.882 (2) Å] inter­actions, resulting in the formation of a supra­molecular framework.
机译:标题化合物C12H6N4在不对称单元中与四个独立的分子(A,B,C和D)结晶。每个分子中两个吡啶环之间的二面角在A中为25.25(8)°,在B中为5.51(9)°,在C中为11.11(9)°,在D中为16.24(8)°。在晶体中,分子A B和B通过C–H⋯N氢键连接形成平行于ab平面延伸的层,而分子C和D通过C–H⋯N氢键连接,形成沿–C–D–C–D–链传播b轴方向。层和链通过偏移π–π和C≡N⋯π[N-吡啶-质心距离= 3.882(2)]相互作用沿着c轴交替堆叠,从而形成了超分子框架。

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