A Noninterpenetrated 1D Molecular Ladder and 2D Butterfly Network: Effect of Positional Isomerism of Semirigid Bis(pyridylmethyl)pyromellitic Diimide Ligands on the Architecture of Their Metal(II) Com
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- 作者：Xing-Qiang Lü ; Ji-Jun Jiang ; Hans-Conrad zur Loye ; Bei-Sheng Kang ; and Cheng-Yong Su
- 刊名：Inorganic Chemistry
- 出版年：2005
- 出版时间：March 21, 2005
- 年：2005
- 卷：44
- 期：6
- 页码：1810 - 1817
- 全文大小：444K
- 年卷期：v.44,no.6(March 21, 2005)
- ISSN：1520-510X
文摘
Three new complexes [Cd(4-pmpmd)1.5(NO3)2]·CHCl3 (1), [Cd(3-pmpmd)1.5(NO3)2]·EtOH (2), and [Zn(3-pmpmd)1.5(NO3)2]·MeOH (3) (3- or 4-pmpmd = N,N'-bis(3- or 4-pyridylmethyl)pyromellitic diimide) containing T-shaped buildingblocks have been obtained from reactions between the long semirigid ligands 3- or 4-pmpmd and either cadmiumor zinc nitrate. 1 forms noninterpenetrated 1D molecular ladders that are linked via multiple, complementaryintermolecular C-H···O hydrogen bonds that effect the 3D alignment. 2 and 3 are isostructural and feature anoninterpenetrated 2D butterfly-shaped network with (6,3) topology. Multiple intermolecular C-H···O hydrogenbonds exist between the 2D layers and generate the 3D framework. The structural differences between 1 and 2or 3 are attributed to the different conformations adopted by the ligands, which illustrate the influence of positionalisomerism on the resultant supramolecular architectures of metal complexes.