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-Like Spiral Pb4O6 Cores (H2IDA = iminodiacetic acid)

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, Oil the other hand, 2 represents a novel 12-connected lead(II) hybrid compound based oil 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 (Delta or Lambda geometries) are extended by mu(2)-Cl and mu(3)-Cl bridges. Anions (NCS-, Cl-) well-regulate these lead(II) frameworks via coordination bonds and secondary weak supramolecular interactions. Solid-state luminescence spectra of I and 2 also have been investigated.