Hydrothermal Syntheses and Characterization of Two Novel Lead(II)-IDA Coordination Polymers: From 2D Homochiral Parallel Interpenetration to 12-Connected Lead(II) Hybrid Framework Based on Propeller-L

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• 作者：Bin Ding ; Yuan Yuan Liu ; XiangXia Wu ; Xiao-Jun Zhao ; GuiXiang Du ; En-Cui Yang ; Xiu Guang Wang
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：September 2, 2009
• 年：2009
• 卷：9
• 期：9
• 页码：4176-4180
• 全文大小：844K
• 年卷期：v.9,no.9(September 2, 2009)
• ISSN：1528-7505

文摘

Under hydrothermal conditions, two unique lead(II) frameworks {Pb_1.5(NCS)₂(L)_0.5}_n (1) and {Pb₄Cl₅(HL)₃}_n (2) (H₂L = iminodiacetic acid) have been isolated. 1 represents a scarcely reported 2D lead(II) framework in which two neighboring homochiral layers parallel interpenetrate each other. Between the interpenetrating layer, interwoven double-stranded helices with the same handedness can be observed. On the other hand, 2 represents a novel 12-connected lead(II) hybrid compound based on propeller-like spiral Pb₄O₆ cores as nodes with two kinds of different bridges (chloride and carboxylate bridges). 2D chiral inorganic−organic hybrid layers with (3,6) topological structure can be observed, in which Pb₄O₆ cores (Δ or Λ geometries) are extended by μ₂-Cl and μ₃-Cl bridges. Anions (NCS⁻, Cl⁻) well-regulate these lead(II) frameworks via coordination bonds and secondary weak supramolecular interactions. Solid-state luminescence spectra of 1 and 2 also have been investigated.