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[Display omitted] • Six 5,5′-(1,2-phenylenebis(methoxy))diisophthalate coordination polymers were prepared. • The tetracarboxylic acid displays seven types of coordination modes. • These complexes exhibit 2D networks and 3D porous MOFs. • Mn(II) complexes 1 and 2 have antiferromagnetic couplings. Mn(II)/Cd(II) nitrates react with 5,5′-(1,2-phenylenebis(methoxy))diisophthalic acid (H 4 L) and four dipyridyl-typed N -donor ligands to afford six coordination polymers, {[Mn 2 (L)(bpee) 2 ]·DMF} n (1), {[Mn 3 (H 2 L) 3 (bpmp)(H 2 O) 2 ]·2DMF·2H 2 O} n (2), {[(CH 3) 2 NH 2 ] 2 [Cd(L)]·2H 2 O} n (3), [Cd 2 (L)(H 2 O) 2 (DMF)] n (4), {[Cd(L) 0.5 (bpdb)]·DMF} n (5) and [Cd(H 2 L)(bpp)(H 2 O)] n (6) [bpee = 1,2-bis(4-pyridyl)ethylene, bpmp = 1,4-bis(4-pyridylmethyl)piperazine, bpdb = 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene, bpp = 1,3-bis(4-pyridyl)propane]. These complexes were characterized by elemental analyses, IR spectra, PXRD, thermogravimetry and X-ray structural analysis. H 4 L displays seven types of coordination modes in them. Four complexes are 3D coordination polymers, except 2D wave-like network of complex 3 and 1D double-chain polymer of complex 6. Cd(II) complexes 3 , 4 and 6 display strong blue luminescence. Complex 1 exhibits weak antiferromagnetic coupling in [Mn 2 (μ 2 -COO) 2 (COO) 2 ] dimer, while complex 2 shows antiferromagnetic coupling in [Mn 3 (μ 2 -COO) 6 ] trinuclear cluster. [ABSTRACT FROM AUTHOR]

Highlights: [•] 2D framework constructed from Mn6 units with (4,4)-net. [•] Sodium ions act as connector. [•] 2D complex shows slow magnetic relaxation behavior. [ABSTRACT FROM AUTHOR]

Five 5-bromoisophthalate coordination polymers were prepared and structurally characterized. Complexes 1 – 3 are 2D double-layered networks constructed from 1D [M 2 (5-Br-ip) 2 ] n (M = CoII/NiII/ZnII) double chains pillared by azpy and 4,4′-bipy spacers. Complexes 4 and 5 are 3D porous MOFs assembled by 2D wave-like [Zn(bpmba)] n networks connected by 5-Br-ip2− linkers. Complexes 1 and 2 show weak antiferromagnetic couplings in carboxylate-bridged Co 2 (CO 2) 2 and Ni 2 (CO 2) 2 dimers. • Five 5-bromoisophthalate coordination polymers were prepared. • These complexes exhibit 2D double-layered networks and 3D porous MOFs. • Complexes 1 and 2 show antiferromagnetic couplings in carboxylate-bridged CoII/NiII dimers. 5-Bromoisophthalic acid (5-Br-H 2 ip) reacts with metal nitrates and dipyridyl-type auxiliary ligands to afford five coordination polymers, [Co 2 (5-Br-ip) 2 (azpy) 2 ] n ∙2 n H 2 O (1), [Ni 2 (5-Br-ip) 2 (4,4′-bipy) 2 ] n ∙5 n H 2 O (2), [Zn(5-Br-ip)(4,4′-bipy)] n · n H 2 O (3), [Zn 2 (5-Br-ip)(bpmba) 2 (H 2 O) 2 ] n ∙ n DMF(4), [Zn 2 (5-Br-ip)(bpmba) 2 ] n ∙2 n H 2 O (5) (azpy = 4,4′-azobispyridine; 4,4′-bipy = 4,4′-bipyridine; Hbpmba = 3,5-bis(pyridin-4-yl-methoxy)benzoic acid). These complexes are characterized by elemental analysis, IR, PXRD, thermogravimetry and single crystal X-ray structural analysis. Complex 1 is a 2D double-layered network constructed from [Co 2 (5-Br-ip) 2 ] n double-chains pillared by azpy spacers. Complexes 2 and 3 are 2D double-layered networks using 4,4′-bipy as spacer. Complexes 4 and 5 are different 3D porous metal–organic frameworks (MOFs) assembled by 2D wave-like [Zn(bpmba)] n networks and bidentate 5-Br-ip2− linkers. Both complexes show (3,4)-connected jea-type nets of {63}{65·8} topology. The five complexes are thermally stable up to 350–410 °C. Complexes 1 and 2 show weak antiferromagnetic interactions in the carboxylate-bridged Co 2 (CO 2) 2 and Ni 2 (CO 2) 2 dimers. [ABSTRACT FROM AUTHOR]