A double-layered zinc(II) coordination polymer with the ligand 3,5-bis(carboxylatomethoxy)benzoate

Abstract

In the title compound, poly[hexaaquabis[mu(4)-3,5-bis(carboxylatomethoxy)benzoato]trizinc(II)], [Zn(3)(C(11)H(7)O(8))(2)(H(2)O)(6)](n), there are two crystallographically distinct Zn(II) cations which are bridged by polycarboxylate ligands in a mu(4)-bridging mode. A pair of ligands bridges adjacent Zn atoms to give centrosymmetric dimetal building blocks which act as four-connected nodes to be further interlinked into a two-dimensional double-layered framework with (4,4) topology. Other Zn atoms, lying on inversion centres, occupy the cavities of this topological structure. This submission shows a versatile polycarboxylate ligand with rigid and flexible functional groups, the co-operation and complementarity of which would meet the coordination requirements of a variety of topological structures.

A novel (4,6)-connected double-layered BaIIcoordination polymer based on the flexible tricarboxylate ligand 2,2′,2′′-[1,3,5-triazine-2,4,6-triyltris(sulfanediyl)]triacetic acid

“…The latter, however, can adopt variable conformations according to the geometric requirements of different metal ions, and may afford unpredictable and interesting architectures (Gomez-Lor et al, 2005;Zang et al, 2006;Dong et al, 2007). To the best of our knowledge, only limited work has been carried out using polycarboxylate ligands with characteristics of both flexibility and rigidity (Jiang et al, 2009;Harbuzaru et al, 2008;Cen et al, 2009). Likewise, in contrast with the well investigated transition and lanthanide metal systems, only a few alkaline earth coordination polymers have been studied.…”

Lead(II) coordination polymers based on rigid-flexible 3,5-bis-oxyacetate-benzoic acid: Structural transition driven by temperature control

“…In addition, multi-carboxylates have been intensively investigated in the field of CPs with an intriguing variety of topologies and potential applications [10][11][12]. While, numerous investigations mainly focused on the entirely rigid or flexible multi-carboxylate coordination systems [13][14][15][16], very few were performed on mixed rigid-flexible multi-carboxylic acid ligands.…”