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1,8-naphthalimide synthon in silver coordination chemistry: Control of supramolecular arrangement

机译:银配位化学中的1,8-萘二甲酰亚胺合成子:超分子排列的控制

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摘要

The reaction of N-[2,2-bis(pyrazolyl) ethane]-1,8-naphthalimide (L1) and N-[2,2-bis(3,5-dimethylpyrazolyl) ethane]1,8- naphthalimide (L2) with silver tetrafluoroborate produced two new compounds, formulated on the basis of elemental figures and ESI/MS+ experiments as [Ag(L1)(2)](BF4) and [Ag(L2)(2)](BF4), respectively. Crystallization of these two compounds resulted in the formation of two pseudopolymorphs in each case; the structures of all four have been determined by X-ray crystallography. The common feature of all four structures is the directional pi-pi stacking of the naphthalimide groups, with the dipole vectors oriented at 180 degrees antiparallel. The crystal packing is also influenced by several other noncovalent interactions, such as the pyrazolyl embrace, C-H center dot center dot center dot pi interactions, and weak C-H center dot center dot center dot O hydrogen bonds.
机译:N- [2,2-双(吡唑基)乙烷] -1,8-萘二甲酰亚胺(L1)与N- [2,2-双(3,5-二甲基吡唑基)乙烷] 1,8-萘二甲酰亚胺(L2)的反应)与四氟硼酸银生成了两种新化合物,根据元素图和ESI / MS +实验分别将其配制为[Ag(L1)(2)](BF4)和[Ag(L2)(2)](BF4)。这两种化合物的结晶分别导致形成两个假多晶型。通过X射线晶体学确定了全部四个的结构。所有这四个结构的共同特征是萘二甲酰亚胺基团的定向pi-pi堆叠,偶极矢量的方向为180度反平行。晶体堆积还受到其他几种非共价相互作用的影响,例如吡唑基拥抱,C-H中心点中心点中心点pi相互作用和弱的C-H中心点中心点中心点O氢键。

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