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Xylene-functionalized N-donor ligand p -BIMB (p = para position, BIMB = bis- (imidazole-1-ylmethyl)benzene) and rigid carboxylate linker trans -H 2 CHDA (CHDA = 1,4-cyclohexane(dicarboxylic)acid) were treated with Co(NO 3) 2 under solvothermal conditions to afford a new two-dimensional (2D) coordination polymer [Co(trans -H 2 CHDA) 2 (p -BIMB) 2 ·2H 2 O] n (1). Complex 1 possesses a sql network. With the porosity formed by the 2D framework, the Co(II) complex 1 demonstrates an excellent specific capacitance of 563 F g−1 at a current density of 1 A g−1, and also good retention of capacitance (≈64% after 4000 cycles at 5 A g−1). Which make complex 1 a good candidate for electrode material in a supercapacitor application. Meanwhile, this Co(II) compound exhibits good adsorption ability for the permanganate anion. Image 1 • A new coordination polymer [Co(trans -H 2 CHDA) 2 (p -BIMB) 2.•2H 2 O] n has been prepared and characterized. • 2D network with a 4,4-sql topology. • Stable metal organic framework for permanganate recognition and removal in an aqueous solution. • Good candidate for electrode material in a supercapacitor application. [ABSTRACT FROM AUTHOR]

A series of three-dimensional coordination polymers, namely, [Cd(BIMB)(SCA)] n ( 1 ), [M(BIMB)( trans -CHDC)] n ( 2 , M = Cd 2+ ; 3 , M = Co 2+ ), where BIMB = 1,4-di(1 H -imidazol-1-yl)benzene, SCA 2− = succinate dianion, CHDC 2− = cyclohexane-1,4-dicarboxylate dianion) are synthesized hydro/solvatothermal methods. The products are characterized by elemental analysis and single–crystal X-ray diffraction data. Both the dianion and BIMB bridge different pairs of the metal ions, the three complexes are polymeric and their three-dimensional topology feature a diamond-like metal–organic framework (MOF). Owing to the length of the two bridging ligands, moderate size voids are formed in the diamondoid networks. However, the voids are filled by mutual interpenetration of four independent equivalent frameworks in a 5-fold interpenetrating architecture, and there is no sufficient void volume available for any guest molecules. The phase purity and thermal stability of the compounds are verified by powder X–ray diffraction (PXRD) and thermogravimetric (TG) data. The solid–state fluorescence spectra for the 3d 10 Cd 2+ MOF's 1 and 2 reveal significant enhancement in their emission intensities in comparison to the non-metallated BIMB. The enhanced emission is attributed to perturbation of intra-ligand emission states due to Cd 2+ coordination. [ABSTRACT FROM AUTHOR]