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- W2023657708 abstract "Reactions of Pb(CH3COO)2·3H2O, MNO3 (M = K, Rb, and Cs) with m-H2BDC (1,3-H2BDC = 1,3-benzenedicarboxylic acid) in a mixed-solvent of DMF and methanol (v/v = 2/1) resulted in the formation of novel metal–organic frameworks [(Me)4N]2[Pb6M6(m-BDC)9(OH)2]·H2O (1: M = K; 2: M = Rb; 3: M = Cs). With H2SDBA (H2SDBA = 4,4′-sulfonyldibenzoic acid), two new lead(II) coordination polymers, [K2Pb(SDBA)2(μ3–H2O)]·3H2O (4) and [Cs2Pb2(SDBA)3(DMF)] DMF (5), were isolated. These complexes have been fully characterized by elemental analysis, PXRD, FTIR, TGA and single crystal X-ray diffraction. Compounds 1–3 are 3-D coordination frameworks built by a novel 12-metal heterometallic Pb6-M6 cage that extends topologically into an eight-connected hex network viaisophthalic acid ligands. Compounds 4 and 5 are new 3-D lead(II) MOFs constructed by ladder-like Pb(II)/K(I)/SDBA2− and rod-shaped Pb(II)/Cs(I)/SDBA2− motifs, respectively. The Pb(II) ions in these complexes show different coordination geometries with various coordination numbers (5, 7 and 9). In addition, an ideal T-shaped μ3-H2O is observed in 4. The SDBA2− ligands in 4 and 5 display three types of new coordination modes that have not been observed before. At room temperature, 1–3 exhibit strong emissions in the solid-state which can be attributed to ligand-to-metal charge transfer between the delocalized π bonds of carboxylate groups and p orbitals of lead(II) centers." @default.
- W2023657708 created "2016-06-24" @default.
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- W2023657708 date "2012-01-01" @default.
- W2023657708 modified "2023-09-23" @default.
- W2023657708 title "Synthesis, structures and luminescent properties of new Pb(<scp>ii</scp>)/M(<scp>i</scp>) (M = K, Rb and Cs) frameworks based on dicarboxylic acids: a novel icosahedral Pb<sub>6</sub>-M<sub>6</sub>SBU" @default.
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- W2023657708 doi "https://doi.org/10.1039/c1ce06111a" @default.
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