Abstract
Poised to understand the influence of O- and S-heteroatoms on the chemical reactivity of dicarboxylic acids toward Pb(II), leading to crystalline metal–organic hybrid materials with distinct lattice architecture, dimensionality, and spectroscopic properties, the synthesis and physicochemical properties of binary/ternary Pb(II)–(O,S)-dicarboxylic acid–(phenanthroline) systems was investigated in aqueous media. pH-specific hydrothermal reactions of Pb(II) with O- and S-dicarboxylic acid ligands and phenanthroline (phen) afforded the variable dimensionality metal–organic Pb(II) polymers [Pb3(oda)3]n (1), [Pb(phen)(oda)]n (2), [Pb(tda)]n (3), and [Pb(phen)(tda)]n (4). The choice of O- vs S-ligands in the aqueous systems of Pb(II) and phenanthroline is linked to the emergence of distinct lattice composition–dimensionality (2D–3D) changes at the binary and ternary level, bestowing spectroscopic fingerprint identity to Pb(II) coordination and luminescence activity.
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