A three-dimensional coordination polymer of 3-(3,5-dicarboxybenzyloxy) benzoic acid with zinc

Ranjan Patra, Israel Goldberg

Research output: Contribution to journalArticlepeer-review


The synthesis is reported of the tri carb oxy lic acid 3-(3,5-di carb oxy benzyl oxy)benzoic acid (H3 L) and the product of its reaction under solvothermal conditions with ZnII cations, namely poly[[μ6-3-(3,5-di carboxyl ato benzyl oxy)benzo ato](di methyl formamide)-μ3-hydroxido-dizinc(II)], [Zn2(C16H9O7)(OH)(C3H7NO)] n , the formation of which is associated with complete deprotonation of H3 L. Its crystal structure consists of a single-framework coordination polymer of the organic L 3- ligand with ZnII cations in a 1:2 ratio, with additional hydroxide and di methyl formamide (DMF) ligands coordinated to the ZnII centres. The ZnII cations are characterized by coordination numbers of 5 and 6, being bridged to each other by hydroxide ligands. In the polymeric framework, the carboxyl ate- and hy droxy-bridged ZnII cations are arranged in coordination-tessellated columns, which propagate along the a axis of the crystal structure, and each L 3- ligand links to seven different ZnII centres via Zn - O bonds of two different columns. The coordination framework, composed of [Zn2(L)(OH)(DMF)] n units, forms an open architecture, the channel voids within it being filled by the zinc-coordinating DMF ligands. This report provides the first structural evidence for the formation of coordination polymers with H3 L via multiple metal-ligand bonds through its carboxyl ate groups.<!?tpb=21.5pt>

Original languageEnglish
Pages (from-to)819-821
Number of pages3
JournalActa Crystallographica Section C: Crystal Structure Communications
Issue number8
StatePublished - Aug 2013


  • carboxylates
  • coordination polymers
  • crystal structure
  • zinc compounds


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