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首页> 外文期刊>Crystal growth & design >The Power of Nonconventional Phenyl C-H center dot center dot center dot N Hydrogen Bonds: Supportive Crystal-Packing Force and Dominant Supramolecular Engineering Force
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The Power of Nonconventional Phenyl C-H center dot center dot center dot N Hydrogen Bonds: Supportive Crystal-Packing Force and Dominant Supramolecular Engineering Force

机译:非常规苯基C-H中心点中心点中心点N氢键的力量:支撑晶体堆积力和主导性超分子工程力

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摘要

The role of phenyl C-(HN)-N-... interactions in crystal engineering is explored with a variety of fluorinated phenyl-containing compounds. In particular, we show that this interaction can guide the formation of one-dimensional phenyl C-H...N hydrogen-bonded ribbons with, for example, 4-(2,3,5,6-tetrafluorophenylethynyl)pyridine. The interaction is shown to also control the formation of self-complementary homodimers with 3-(2,3,4,5-tetrafluorophenylethynyl)pyridine. We also demonstrate that the phenyl C-(HN)-N-... hydrogen bond interaction is capable of enticing co-crystallization of molecules such as 2,3,5,6,2',3',5',6'-octafluorobiphenyl and 4,4'-dipyridyl. Finally, we describe the use of an intramolecular scaffold to evaluate the effect of electron-withdrawing substituents on the strength of a phenyl C-(HN)-N-... hydrogen bond.
机译:利用多种含氟苯基化合物探索了苯基C-(HN)-N -...相互作用在晶体工程中的作用。特别是,我们表明这种相互作用可以指导与例如4-(2,3,5,6-四氟苯基乙炔基)吡啶的一维苯基C-H ... N氢键结合带的形成。相互作用还显示与3-(2,3,4,5-四氟苯基乙炔基)吡啶一起控制自互补同二聚体的形成。我们还证明,苯基C-(HN)-N -...氢键相互作用能够诱使分子共结晶,例如2,3,5,6,2',3',5',6' -八氟联苯和4,4'-二吡啶基。最后,我们描述了分子内支架的使用,以评估吸电子取代基对苯基C-(HN)-N -...氢键强度的影响。

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