are connected into dimers via two N–H⋯Ocarbonyl and two N–H⋯Npyridyl intermolecular hydrogen bonds. The offset-stacked layers are tightly inter-linked (spacing of 3.477 A) by hydrogen bonding and aromatic π–π stacking interactions. These dimers are further linked into polymeric chains by hydrogen bonding through bridging methanol solvent molecules. The central aromatic rings of molecules in adjacent dimers
摘要 新型蜘蛛状三肽 N,N',N"-tris(2-aminopyridine)benzo-1,3,5-tricarboxamide 的 X 射线晶体结构显示出新的扩展聚合物结构的意外形成。该结构的特点是协同氢键通过自组装产生相邻对,并在环之间堆叠。通过反转中心相关的酰胺基对通过两个 N-H⋯O羰基和两个 N-H⋯N
吡啶基分子间氢键连接成二聚体。偏移堆叠层通过氢键和芳香 π-π 堆叠相互作用紧密互连(间距为 3.477 A)。这些二聚体通过桥接
甲醇溶剂分子的氢键进一步连接到聚合物链中。相邻二聚体中分子的中心芳环再次通过反转对称性相关,