%0 Journal Article %T Lead(II) complexes with Kemp’s tricarboxylate: Can lone pair activity be discerned ? %+ Institut de Science et d'ingénierie supramoléculaires (ISIS) %+ Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF) (LCMCE) %A Atoini, Youssef %A Harrowfield, Jack %A Thuéry, Pierre %< avec comité de lecture %@ 0277-5387 %J Polyhedron %I Elsevier %V 218 %P 115760 %8 2022-03-03 %D 2022 %R 10.1016/j.poly.2022.115760 %K Carboxylic acids %K Lead(II) cation %K Luminescence properties %K Metal-organic networks %K Structure elucidation %Z Chemical Sciences/CristallographyJournal articles %X Kemp's triacid (H3kta; cis,cis-1,3,5-trimethylcyclohexane-1,3,5-tricarboxylic acid) has been used to synthesize three lead(II) complexes under solvo-hydrothermal conditions. [Pb$_3$(kta)Cl$_3$] (1) and [Pb$_3$(H$_3$kta)(kta)$_2$] (2) are both diperiodic coordination polymers displaying hydrophobic surfaces with protruding methyl groups, complex 2 being isomorphous with an Sr$^{II}$ complex previously reported. In contrast, [Pb(Hkta)(phen)] (3), where phen is 1,10-phenanthroline, is a monoperiodic, helical coordination polymer. In all cases, Pb$^{II}$ cations are in seven-or eight-coordinate environments of predominantly hemidirected nature. The possible effects of the Pb$^{II}$ valence shell lone pair are discussed in terms of coordination geometry and Pb...H weak interactions as revealed on Hirshfeld surfaces. Only in complex 1 is a short Pb...H contact at 2.84 Å possibly indicative of appreciable basicity of the metal ion. All three complexes show similar weak luminescence, apparently independent of the nature of the ligands. %G English %2 https://cea.hal.science/cea-03596707/document %2 https://cea.hal.science/cea-03596707/file/Thuery_Polyhedron2022_V0.pdf %L cea-03596707 %U https://cea.hal.science/cea-03596707 %~ INSERM %~ CEA %~ CNRS %~ UNIV-STRASBG %~ PUBNIMBE %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ SITE-ALSACE %~ UNIVERSITE-PARIS-SACLAY %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ TEST2-HALCNRS