Abstract

A three-dimensional (3D) coordination network {[Cd3(BTC)2(L)3(H2O)3]·3H2O}∞ [L=N,N′-di(4-pyridyl)adipoamide; H3BTC=1,3,5-benzenetricarboxylic acid], 1, has been synthesized by the hydrothermal reaction and characterized by the single crystal X-ray crystallography. Structural analysis reveals that the BTC3− ligands adopt the μ3-bonding mode and coordinate to the Cd(II) ions to establish the triangular Cd(II) units, which are linked by the L ligands to form a 3-fold interpenetrated coordination network with the rare tfz topology. Gas adsorption experiments of the desolvated product of 1 show that the H2 capture is preferable to N2 and CO2.

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