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1D-3D Metal-Organic Lattice Assemblies through Chemical Reactivity and Metal-Assisted Ligand Transformations in Ternary Pb(II)-Phenanthroline-(Hydroxy)Dicarboxylic Acid Systems

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Autori: C. Gabriel, C. P. Raptopoulou, V. Psycharis, A. Terzis, M. Zervou, C. Mateescu, A. Salifoglou

Editorial: American Chemical Society, Crystal Growth & Design, 11(2), p.382-395, 2011.


Variable-pH hydrothermal reactions of Pb(II) with dicarboxylic acids in the presence of 1,10-phenanthroline led to new solid-state compounds [Pb2(C12H8N2)4(C4H2O4)](NO3)2 (1), [Pb2(C12H8N2)4(CO3)(C4H2O4)]n 3 6nH2O (2), [Pb2(C12H8N2)(C4H2O4)2]n (3), and [Pb(C12H8N2)(C4H2O4)]n 3 2nH2O (4). All compounds were characterized by elemental analysis, FT-IR, CP-MAS NMR, and single crystal X-ray diffraction. The collective chemical reactivity in the ternary Pb(II)-phenanthroline-dicarboxylate systems unravels seldom seen metal-assisted ligand malate/maleate to fumarate transformations, which in the presence of Pb(II) and 1,10-phenanthroline contribute to the assembly of 2D (2) and 3D lattice networks (3 and 4). All distinct assemblies in 1-4 reveal interwoven crystal lattice connections, reflecting unique physicochemical properties.

Cuvinte cheie: Hydrothermal synthesis, Dicarboxylic acid, Phenanthroline, Pb(II), NMR Spectroscopy, X-ray Crystal Structure