Fused pyridazines (1,2,3,6,7,8-hexahydro-cinnolino[5,4,3-cde]cinnoline, L and its 2,2,7,7-tetramethyl derivative, Me4L) are designed as rigid multidentate ligands for the construction of framework solids. In combination with copper(I) bromide (iodide) they provide excellent structural examples for predictive engineering and the possibilities for further fine-tuning of the framework architectures facilitated by the tetradentate function of the ligands and effective cooperation of organic and inorganic bridges. This study features control over helical structures for (CuX)n chains and homo/heterochiral combination of the helices in the lattice, the design of a range of channelled and tubular CuX networks and the structural significance of ligand shape complementarity. 3D tetragonal Cu2X2(L) frameworks exist either as chiral or achiral supramolecular isomers Cu2I2(Me4L) and Cu12I12Cu(CH3CN)}3(L)6Cu3I6·CH3CN illustrate 3D hexagonal channelled and tubular arrays; Cu2I2(Me4L)(CH3CN) and Cu4I4(L)(CH3CN)2 complexes are 1D polymers.
融合
哒嗪(1,2,3,6,7,8-六氢-噌啉并[5,4,3-cde]噌啉 L 及其 2,2,7,7- 四甲基衍
生物 Me4L)被设计为构建框架固体的刚性多齿
配体。它们与
溴化铜(I)(
碘化
铜)结合,为预测工程提供了极好的结构范例,并通过
配体的四价功能以及有机和无机桥的有效合作,为进一步微调框架结构提供了可能性。这项研究的特点是控制 (CuX)n 链的螺旋结构和晶格中螺旋的同/异手性组合、设计一系列通道和管状 CuX 网络以及
配体形状互补的结构意义。三维四角形 Cu2X2(L) 框架以手性或非手性超分子异构体
Cu2I2(Me4L) 和 Cu12I12Cu(CH3CN)}3(L)6Cu3I6-CH3CN 的形式存在,展示了三维六角形导管和管状阵列; (Me4L)(CH3CN) 和 Cu4I4(L)(CH3CN)2 复合物是一维聚合物。