Coordination polymer

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

Silver(I) 3-Aminomethylpyridine Complexes, Part 1: Effect of Ligand Ratio, π-Stacking, and Temperature with a Noninteracting Anion

Abstract: The reaction of the asymmetric 3-aminomethylpyridine (3-amp) ligand with silver(I) tetrafluoroborate (AgBF4) produces an array of structural motifs that depend on the ratio of the reactants present and crystallization temperature. With a 1:1 ratio of 3-amp to silver, either a folded macrocycle, 1a, or a linear coordination polymer, 1, is formed, depending upon whether the crystals are grown at −35 or 5 °C. A 3:2 ratio forms two-dimensional sheets of 2 regardless of temperature of crystallization. The 2:1 ratio of ligand to metal again sees a temperature dependence with either a one-dimensional, 3a, or two-dimensional, 3, coordination polymer formed upon crystallization at low and high temperatures, respectively. Addition of 2,2‘-bipyridine to any of the previous reaction mixtures stops the formation of their respective structures, instead constructing the discrete Ag−Ag-linked 4.

Absorption of CO2 and CS2 into the Hofmann-type porous coordination polymer: Electrostatic versus dispersion interactions

Abstract: Absorption of CO2 and CS2 molecules into the Hofmann-type three-dimensional porous coordination polymer (PCP) {Fe(Pz)[Pt(CN)4]}n (Pz = pyrazine) was theoretically explored with the ONIOM(MP2.5 or SCS-MP2:DFT) method, where the M06-2X functional was employed in the DFT calculations. The binding energies of CS2 and CO2 were evaluated to be −17.3 and −5.2 kcal mol–1, respectively, at the ONIOM(MP2.5:M06-2X) level and −16.9 and −4.4 kcal mol–1 at the ONIOM(SCS-MP2:M06-2X) level. It is concluded that CS2 is strongly absorbed in this PCP but CO2 is only weakly absorbed. The absorption positions of these two molecules are completely different: CO2 is located between two Pt atoms, whereas one S atom of CS2 is located between two Pz ligands and the other S atom is between two Pt atoms. The optimized position of CS2 agrees with the experimentally reported X-ray structure. To elucidate the reasons for these differences, we performed an energy decomposition analysis and found that (i) both the large binding energy an...

Synthesis, Characterization, and Magnetic Studies of Coordination Polymers with Co(II) and Mn(II) Ions

Abstract: An ether bridged tricarboxylic acid ligand, 5-(4-carboxybenzyloxy)isophthalic acid (p-cbiaH3) has been used to construct three coordination polymers with Co(II) salts in presence of different nitrogen donor ligands such as 1,4-bis(4-pyridinylmethyl)piperazine (bpmp), dipyridine-4-yl-diazene (dpd), and 4,4′-bipyridine (bpy). The products formed under hydrothermal conditions are formulated as {[Co3(p-cbia)2(bpmp)2(H2O)6]·10H2O}n (1), {[Co2(p-cbiaH)2(dpd)(H2O)2]}n (2) and {[Co3(p-cbia)2(bpy)(H2O)8]·6H2O}n (3). Reacting with MnCl2·4H2O under solvothermal condition, it affords {[Mn3(p-cbia)2(DMF)2]·DMF}n (4). All the complexes have been characterized by single-crystal X-ray diffraction, IR spectroscopy, thermogravimetry, elemental analysis, and powder X-ray diffraction (PXRD) measurements. Topological analysis reveals that 1 is a (3,4)-connected jeb net, 2 is a (3,8)-connected tfz-d net, while 3 forms a 3-connected hcb type net. However, with the Mn(II) salt, it forms a 3D coordination polymer with a novel (5,...

A Unique Independent One-Dimensional Green Luminescent Coordination Polymer Nanotube Based on an Unsymmetric Tricarboxylate Linker

Abstract: A novel independent one-dimensional (1D) coordination polymer nanotube [Cd3(BPT)2(phen)3(H2O)]·4.5H2O (CPNT-1, H3BPT = biphenyl-3,4′,5-tricarboxylic acid; phen = 1,10-phenanthroline) has been synth...