Syntheses, crystal structures, and fluorescent properties of three coordination polymers with 5-sulfoisophthalic acid anion and 4-phenylpyridine

Three coordination polymers-{[Ag-2(SIP)(4-pp)]center dot[Ag(4-pp)(2)]center dot H2O}(n), [Pb-4(SIP)(2)(mu(3)-OH)(2)(H2O)(2)](n), and {[Zn-2(SIP)(2)(4-pp)(4)][Zn(4-pp)(2)(H2O)(4)]center dot 4H(2)O}(n) (SIP = 5-sulfoisophthalic acid anion, 4-pp = 4-phenylpyridine)-are constructed under hydrothermal or solvothermal conditions using sodium m-phthalate 5-sulfonate (NaH2SIP) and 4-phenylpyridine as ligands. The structures of the three complexes are determined by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analyses, Fourier-transform infrared analysis, and photoluminescence. The fluorescent properties of the complexes in the solid state are investigated at room temperature, and the results indicate that they all show photoluminescent properties.