Syntheses,Crystal Structures and Luminescent Properties of Lead(Ⅱ) and Cadmium(Ⅱ) Coordination Polym

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Two coordination polymers, namely [Pb(Hbtc)(phen)]n(1) and {[Cd3(btc)2(H2O)4]·2H2O}n(2, H3btc = biphenyl-2,5,3’-tricarboxylic acid, phen = 1,10-phenanthroline), were assembled. Single-crystal X-ray diffraction studies show that compound 1 possesses a zigzag chain 1D coordination network, which is further extended into a 3D supramolecular architecture via O–H···O hydrogen bonds and π-π packing interactions. Compound 2 features a 3D open framework based on a tricadmium(II) subunit, generating a trinodal 4,4,6-connected net with the 4,4,6T24 topology defined by the point symbol of(44·62)3(46·69)2. Thermal stability and luminescent properties of both compounds were studied and discussed. Two coordination polymers, namely [Pb (Hbtc) (phen)] n (1) and {[Cd3 (btc) 2 (H2O) 4] · 2H2O} n (2, H3btc = biphenyl-2,5,3’-tricarboxylic acid single-crystal X-ray diffraction studies show that compound 1 possesses a zigzag chain 1D coordination network, which is further extended into a 3D supramolecular architecture via O-H O hydrogen bonds and π-π packing interactions. Compound 2 features a 3D open framework based on a tricadmium (II) subunit, generating a trinodal 4,4,6-connected net with the 4,4,6 T24 topology defined by the point symbol of (44.62) 3 (46.69) 2. Thermal stability and luminescent properties of both compounds were studied and discussed.
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