Hydrothermal synthesis,structure, and properties of lead(II)-based coordination compounds with R-isophthalic acid (R=OH,CH3) |
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| Abstract: | Three new lead(II)-based coordination polymers, Pb(5-OH-BDC)] n ?·?nH2O (1) (5-OH-BDC?=?5-hydroxyisophthalate), Pb2(5-CH3-BDC)2] n (2), and Pb2(5-CH3-BDC)2(phen)2] n ?·?2nH2O (3) (5-CH3-BDC?=?5-methylisophthalate, phen?=?1,10-phenanthroline), have been hydrothermally synthesized, structurally determined by single-crystal X-ray diffraction, and characterized by elemental analyses, IR spectra, and thermogravimetric analyses. Both 1 and 2 exhibit 2-D double-layer network structures, while 3 possesses 1-D chain structure bridged by 5-CH3-BDC. The coordination sphere of Pb(II) in 1 is holodirected, whereas in 2 and 3 the spheres feature hemidirected structures. Fluorescence properties of 1–3 have been investigated in the crystalline state at room temperature. |
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| Keywords: | Pb(II)-based coordination compound Isophthalate Hydrothermal synthesis Structural analysis Fluorescence spectrum |
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