Assembly of an eight connected porous Cd(II) framework with octahedral and cubo-octahedral cages: Sorption and luminescent properties

An eight connected 3D porous coordination polymer, {[Cd(BTC)0.66(BPz)2] · 6H2O}n (1) (BTC = benzene-1,3,5-tricarboxylic acid, BPz = 3,3′,5,5′-tetramethyl-4,4′-bipyrazole) has been synthesized from hydrothermal reaction of Cd(NO3)2 · 4H2O with BPz and BTC. Complex 1 is a thermally stable microporous MOF having cubo-octahedral and octahedral cages as the Supermolecular Building Block (SBB) with an eight connected reo topology. It shows moderate N2 sorption (101 cm3 g− 1) at 77 K with a BET surface area of 330 m2 g− 1. Complex 1 also exhibits photoluminescent property in solid state with λmax at 397 nm.