Self-assembly of tetraphenol and its complexes with aromatic diamines: Novel interpenetrating and noninterpenetrating organic assemblies

被引:15
作者
Jayaraman, A [1 ]
Balasubramaniam, V [1 ]
Valiyaveettil, S [1 ]
机构
[1] Natl Univ Singapore, Dept Chem, S-117543 Singapore, Singapore
关键词
D O I
10.1021/cg050050l
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The solid-state self-assembly of tetraphenol 1 and its complexes with 4,4'-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (bpy-ethe), and 1,2-bis(4-pyridyl)ethane (bpy-etha) is reported. Forces such as O-H center dot center dot center dot N, O-H center dot center dot center dot O and weak interactions prevalent in the structures promote the formation of interpenetrating and noninterpenetrating supramolecular assemblies. The crystal structure of tetraphenol 1 is characterized by the formation of hydrogen-bonded eight-membered cyclic structures. A diamondoid network was observed in the crystal lattice of 1.bpy with tetraphenol as the node and 4,4'-bipyridine as the spacer. The resulting superadamantane framework is filled via self-clathration to give an 8-fold interpenetrating network. 1.bpy-ethe self-assembled into a stepladder-type arrangement with the bpy-ethe linkers forming the rungs of the ladder. In the lattice of complex 1.bpy-etha, ladder-type and cyclic structures organized adjacent to each other and the water molecules present inside the lattice stabilized the assembly through hydrogen bonding. No interpenetrating networks were observed in the lattices of 1.bpy-ethe and 1.bpy-etha. The C-3 symmetry of tetraphenol 1, orientation of the -OH groups, and the rigidity or the flexibility of the linking aza compounds together with the interplay of hydrogen bonds and packing forces facilitate the formation of stable supramolecular architectures.
引用
收藏
页码:1575 / 1583
页数:9
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