Coordination polymer

About: Coordination polymer is a research topic. Over the lifetime, 11988 publications have been published within this topic receiving 212219 citations.

Three-way switching in a cyanide-bridged [CoFe] chain

Abstract: Bistable compounds that exist in two interchangeable phases under identical conditions can act as switches under external stimuli. Among such switchable materials, coordination complexes have energy levels (or phases) that are determined by the electronic states of their constituent metal ions and ligands. They can exhibit multiple bistabilities and hold promise in the search for multifaceted materials that display different properties in different phases, accessible through the application of contrasting external stimuli. Molecular systems that exhibit both thermo- and photoinduced magnetic bistabilities are excellent candidates for such systems. Here we describe a cyanide-bridged [CoFe] one-dimensional chiral coordination polymer that displays both magnetic and electric bistabilities in the same temperature range. Both the electric and magnetic switching probably arise from the same electron-transfer coupled spin-transition phenomenon, which enables the reversible conversion between an insulating diamagnetic phase and either a semiconducting paramagnetic (thermoinduced) or a type of ferromagnetic single-chain magnet (photoinduced) state.

Crystal structure solid-state cross polarization magic angle spinning 13C NMR correlation in luminescent d10 metal-organic frameworks constructed with the 1,2-Bis(1,2,4-triazol-4-yl)ethane ligand.

Abstract: Hydrothermal reactions of 1,2-bis(1,2,4-triazol-4-yl)ethane (btre) with copper(II), zinc(II), and cadmium(II) salts have yielded the dinuclear complexes [Zn2Cl4(μ2-btre)2] (1) and [Zn2Br4(μ2-btre)2] (2), the one-dimensional coordination polymer ∞1[Zn(NCS)2(μ2-btre)] (3), the two-dimensional networks ∞2[Cu2(μ2-Cl)2(μ4-btre)] (4), ∞2[Cu2(μ2-Br)2(μ4-btre)] (5), and ∞2{[Cd6(μ3-OH)2(μ3-SO4)4(μ4-btre)3(H2O)6](SO4)·∼6H2O} (6), and the three-dimensional frameworks ∞3{[Cu(μ4-btre)]ClO4·∼0.25H2O} (7), ∞3{[Zn(μ4-btre)(μ2-btre)](ClO4)2} (8), ∞3{[Cd(μ4-btre)(μ2-btre)](ClO4)2} (9), and ∞3[Cu2(μ2-CN)2(μ4-btre)] (10, 2-fold 3D interpenetrated framework). The copper-containing products 4, 5, 7, and 10 contain the metal in the +1 oxidation state, from a simultaneous redox and self-assembly reaction of the Cu(II) starting materials. The cyanide-containing framework 10 has captured the CN− ions from the oxidative btre decomposition. The perchlorate frameworks 7, 8, or 9 react in an aqueous NH4+PF6− solution with formation of...

A Porous Supramolecular Architecture from a Copper(II) Coordination Polymer with a 3D Four-Connected 86 Net

Abstract: A novel coordination polymer {[Cu(L1)(L2)(H2O)]·5H2O}n (1), where L1 =1,1‘-(1,4-butanediyl)bis(imidazole) and L2 = m-phthalate anion, has been obtained by using an unusual crystallization process. ...