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

摘要

Five new coordination polymers, namely, [Zn _2(H _2O) _2(BBC)](NO _3)(DEF) _6 (DUT-40), [Zn _3(H _2O) _3(BBC) _2] (DUT-41), [(C _2H _5) _2NH _2][Zn _2(BBC)(TDC)] (DEF) _6(H _2O) _7 (DUT-42), [Zn _(10)(BBC) _5(BPDC) _2(H _2O) _10](NO _3)(DEF) _(28)(H _2O) _8 (DUT-43), and [Co _2(BBC)(NO _3)(DEF) _2(H _2O)](DEF) _6(H _2O) (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.