Selectively sensing and adsorption properties of nickel(II) and cadmium(II) architectures with rigid 1H-imidazol-4-yl containing ligands and 1,3,5-tri(4-carboxyphenyl)benzene

Add time:07/23/2019    Source:sciencedirect.com

Two rigid 1H-imidazol-4-yl containing ligands of 1, 3-di(1H-imidazol-4-yl)benzene (L1) and 1, 4-di(1H-imidazol-4-yl)benzene (L2) were used to react with Ni(II) and Cd(II) salts together with 1,3,5-tri(4-carboxyphenyl)benzene (H3BTB) under hydro- and solvo-thermal conditions, and four new complexes [Ni3(L1)4(BTB)2(C2H5OH)2(H2O)6]·3H2O (1), [Cd3(L1)2(BTB)2(H2O)]·DMF·H2O (2), [Ni3(L2)3(BTB)2(H2O)6]·4H2O (3) and [Cd3(L2)3(BTB)2]·H3BTB·H2O (4) (DMF = N,N-dimethylformamide) were achieved and structurally characterized. The complexes show structural diversity. 1 is an infinite one-dimensional (1D) chain, 3 and 4 are two-dimensional (2D) networks, which are further linked together by hydrogen bonds to give eventual three-dimensional (3D) architectures, while 2 is a 3D framework. Fluorescent sensing and selectively adsorption properties of the complexes were investigated.

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