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Metallosupramolecular Zippers Generated by Self-Organization of Self-Complementary Molecular Clefts

机译:自互补分子裂缝的自组织产生的金属超分子拉链

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The binding of Co~(2+) and Pb~(2+) ions to the terpyridine and pyri-dine subunits of the ligand 1 leads to the self-complementary molecular clefts 2-6,which result from the crossover combination of orthogonal-terpyr-idine and linear-pyridine metal-coordination subprograms and are stabilized by strong JT-JT stacking interactions.Four different cleft-type entities,[Co~(2+) _2(1)_2] (3),[Pb~(2+)_2(l)_2] (4),[Co~(2+)_4(l)_2] (5),[Pb~(2+)_4(l)_2] (6),are generated in both solution and the solid state,and may be interconverted as a function of metal/ligand stoichiometry.One- and two-dimensional metallosupramolecu-lar zipper architectures result from self-assembly in the solid state driven by a combination of different JT-JT stacking subprograms.The U-shaped geometry of the ligand influences the possibility of zipping and thus,in turn,the generation of different zipper architectures.The structures of 2-5 have been confirmed by X-ray crystallography;that of 6 is based on NMR spectral data.
机译:Co〜(2+)和Pb〜(2+)离子与配体1的吡啶和嘧啶亚基的结合导致自互补分子裂隙2-6,这是由于正交分子的交叉结合导致的。叔吡啶和线性吡啶金属配位子程序,并通过强JT-JT堆叠相互作用而稳定。四个不同的Cleft型实体,[Co〜(2+)_2(1)_2](3),[Pb〜( 2 +)_ 2(l)_2](4),[Co〜(2 +)_ 4(l)_2](5),[Pb〜(2 +)_ 4(l)_2](6)生成一维和二维金属微分子拉链结构是由固态的自组装产生的,该固态组装是由不同JT-JT堆叠的组合驱动的配体的U形几何形状会影响拉锁的可能性,进而影响不同拉链结构的生成.X射线晶体学已确认2-5的结构; 6的结构基于NMR光谱数据。

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