A family of 2D and 3D coordination polymers involving a trigonal tritopic linker

Abstract

Five new coordination polymers, namely, [Zn₂(H₂O)₂(BBC)](NO₃)(DEF)₆ (DUT-40), [Zn₃(H₂O)₃(BBC)₂] (DUT-41), [(C₂H₅)₂NH₂][Zn₂(BBC)(TDC)](DEF)₆(H₂O)₇ (DUT-42), [Zn₁₀(BBC)₅(BPDC)₂(H₂O)₁₀](NO₃)(DEF)₂₈(H₂O)₈ (DUT-43), and [Co₂(BBC)(NO₃)(DEF)₂(H₂O)](DEF)₆(H₂O) (DUT-44), where BBC – 4,4′,4′′-(benzene-1,3,5-triyl-tris(benzene-4,1-diyl))tribenzoate, TDC – 2,5-thiophenedicarboxylate, BPDC – 4,4′-biphenyldicarboxylate, DEF – N,N-diethylformamide, were obtained under solvothermal conditions and structurally characterized. It has been shown that compounds DUT-40, DUT-41 and DUT-44 exhibit 2D layered structures with large hexagonal channels. Utilization of additional angular dicarboxylic TDC linker led to the formation of the DUT-42 compound with the structure consisting of three interpenetrated 3D networks. Using the linear co-linker dicarboxylic BPDC, DUT-43 was obtained which forms a complicated 3D architecture arising from the polycatenation of triple-layered 2D building units and 2D single layer units. The pore accessibility of the synthesized compounds in the liquid phase was proved by the adsorption of dye molecules.