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

This is the authors' abstract. We don't add key points for this paper.

Variable-pH hydrothermal reactions of Pb(II) with dicarboxylic acids in the presence of 1,10-phenanthroline led to new solid-state compounds [Pb 2 (C 12 H 8 N 2 ) 4 (C 4 H 2 O 4 )](NO 3 ) 2 ( 1 ), [Pb 2 (C 12 H 8 N 2 ) 4 (CO 3 )(C 4 H 2 O 4 )] n ·6nH 2 O ( 2 ), [Pb 2 (C 12 H 8 N 2 )(C 4 H 2 O 4 ) 2 ] n ( 3 ), and [Pb(C 12 H 8 N 2 )(C 4 H 2 O 4 )] n ·2 n H 2 O ( 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.