cg0501783_si_005.txt (16.81 kB)

Supramolecular Structures Based on Bis(2-hydroxy-5-chlorophenyl) Sulfide and Spirobicromane with Bipyridines

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posted on 07.09.2005 by Qingdao Zeng, Dongxia Wu, Chen Wang, Hongwei Ma, Jun Lu, Caiming Liu, Shandong Xu, Yan Li, Chunli Bai
Six new supramolecular structures have been prepared by bis(2-hydroxy-5-chlorophenyl) sulfide (HCS) and/or spirobicromane (SBC) with bipyridine bases 4,4‘-bipyridyl (bipy), 1,2-di(4-pyridyl)ethylene (dipy-ete), 1,2-bis(4-pyridyl)ethane (bipy-eta), and 4,4‘-dipyridyl N,N‘-dioxide (dipy-dox). These molecular complexes are (HCS)·(bipy) 1, (HCS)·(dipy-ete) 2, (HCS)·(bipy-eta) 3, (HCS)·(dipy-dox) 4, (SBC)·(dipy-ete) 5, and (SBC)·(dipy-dox)·H2O 6, respectively. The crystal structures of 16 have been determined by single crystal X-ray diffraction. All of these molecular complexes exhibit supramolecular structures via O−H···N or O−H···O hydrogen bondings. Both 1 and 2 form interestingly [2 + 2] macrocyclic structures, whose sizes are ca. 12.495(6) Å × 5.087(6) Å and 14.774(6) Å × 5.300(6) Å, respectively. Compounds 3 and 5 form one-dimensional zigzag chain structures. Compounds 4 and 6 form two-dimensional double helices. These results demonstrate that by changing the guest molecule, we can obtain different hydrogen-bonded supramolecular structures through different interactions.