Co(II)/Mn(II)/Cu(II) Coordination Polymers Based on Flexible 5,5′-(hexane-1,6-diyl)-bis(oxy)diisophthalic Acid: Crystal Structures, Magnetic Properties, and Catalytic Activity

Abstract

To systematically explore the impact of coordination complexes on the synthesis of 2-imidazoline and 1,4,5,6-tetrahydropyrimidine derivatives, five Co­(II)/Mn­(II)/Cu­(II) architectures, formulated as {[Co­(L)0.5­(H2O)2]·​CH3OH·​H2O} n (1), {[Co­(L)0.5­(pbib)]·​4H2O} n (2), [Mn­(L)0.5­(Hatz)0.5­(H2O)] n (3), {[Cu­(L)0.5(phen)2]­[Cu­(L)0.5­(phen)2]·0.5L·5H2O} n (4), and {[Cu­(L)0.5(2,2′-bpy)­(H2O)]·H2O} n (5) (H4L = 5,5′-(hexane-1,6-diyl)-bis­(oxy)­diisophthalic acid, pbib = 1,4-bis­(imidazol-1-ylmethyl)­benzene, Hatz = 1H-1,2,4-triazol-3-amine, phen = 1,10-phenanthroline, 2,2′-bipy = 2,2′-bipyridine), have been designed and synthesized. 1 presents a (4,4)-connected 2D sql net with its point (Schläfli) symbol of (44·62)2, which is finally extended to a 3D supramolecular framework by π···π stacking interactions. 2 has a 3D (4,4)-connected new topology net with a point symbol of (86)2. 3 features a (4,4)-connected 3-fold interpenetrating 3D pts topology network with the Schläfli symbol (42·84)2. 4 possesses two binuclear molecules, and these adjacent binuclear units are further stretched to a 2D infinite packing structure through two distinct types of π···π stacking interactions. 5 is a 2D layer structure with the (8)­(84·122) topology. The magnetic studies of 1 and 3 elucidate that both of them signify antiferromagnetic interactions. 4 and 5 have been justified to be available heterogeneous catalysts for the synthesis of 2-imidazoline and 1,4,5,6-tetrahydropyrimidine derivatives.

Central-metal exchange, improved catalytic activity, photoluminescence properties of a new family of d10 coordination polymers based on the 5,5′-(1H-2,3,5-triazole-1,4-diyl)diisophthalic acid ligand

“…The stronger the Lewis acidity, the larger is the effect of the metal ion on substrate activation. 53 Based on the above results and the mechanisms of synthesis of 2-imidazolines catalyzed by the Co II /Cu II -based CPs suggested in the literature, 46,54…”

Zn(II)-Coordination Polymers with a Right- and Left-Handed Twist: Multifunctional Metal–Organic Hybrid for Dye Adsorption and Drug Delivery

“…Metal–organic hybrids displaying multifunctional properties such as H 2 adsorption and drug delivery/magnetic and catalytic properties/magnetic, nonlinear optical and dielectric properties/magnetic and gas adsorption activities/solvent and H 2 storage ability/sorption, magnetism, and enantioselective separation activities, etc. have been reported. − …”

Effect of pH on the construction of CdII coordination polymers involving the 1,1′-[1,4-phenylenebis(methylene)]bis(3,5-dicarboxylatopyridinium) ligand

“…In addition, polycarboxylic acid groups have a high binding ability with metal ions, and the deprotonation process is usually affected by different pH values resulting in different coordination modes (Duan et al, 2008;Platero-Prats et al, 2013). Structural diversity also gives flexible polycarboxylic acid coordination polymer (CP) materials a broad range of potential applications (Bondaruk & Hua, 2019;Liu et al, 2015). However, most of the reports have focused on phthalic acid derivatives.…”