Coordination polymer

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

Synthesis and structure of a one-dimensional cobalt(II) coordination polymer with 1,3-bis(1,2,4-triazol-1-yl)propane

Abstract: A novel 1D-coordination polymeric Co(II) complex [Co(btp)2(NCS)2]n [1, btp = 1,3-bis(1,2,4-triazol-1-yl)propane] was synthesized and characterized. The coordination geometry of the cobalt ions is distorted octahedral, with the equatorial plane formed by the four nitrogen atoms of the four triazole groups and the axial sites occupied by two terminal trans thiocyanato ligands. The Co(II) ions are linked by the btp ligands, building up coordination polymers of infinite 1D-neutral chains.

Tuning silver(I) coordination architectures by ligands design: from dinuclear, trinuclear, to 1D and 3D frameworks

Abstract: In our efforts to tune the structures of AgI complexes by ligand modification, six structurally related ligands: 1,2-bis(triazol-1-ylmethyl)benzene (L1), 1,3-bis(triazol-1-ylmethyl)benzene (L2), 1,4-bis(triazol-1-ylmethyl)benzene (L3), 1,3,5-tri(triazol-1-ylmethyl)-2,4,6-trimethylbenzene (L4), 1,4-bis[3-(2-pyridyl)-pyrazol-1-ylmethyl]naphthalene (L5), and 9,10-bis(benzimidazol-1-ylmethyl)anthracene (L6) have been designed and used to react with AgI salts to form six new complexes: {[Ag2(L1)2](BF4)2(H2O)} (1), [Ag2(L2)(NO3)2]n (2), [Ag(L3)(NO3)]n (3), {[Ag3(L4)2](SiF6)1.5(H2O)3.5} (4), {[Ag2(L5)2](NO3)2(H2O)} (5), and {[Ag2(L6)2](NO3)2(CH3OH)2} (6). All the complexes have been structurally characterized by IR and X-ray diffraction. Structural analyses show that complexes 1, 5, and 6 possess dinuclear structures, which extend to infinite coordination networks linked by Ag⋯N, C–H⋯O, or π–π weak interactions. 2 is a 3D chiral coordination polymer with (10,3)-a topology, and 4 forms a trinuclear cage structure, which further connected by Ag⋯Ag weak interactions to form a 1D supramolecule, while 3 exhibits an infinite 1D chain structure. The structures of complexes 1–6 span from dinuclear, trinuclear, 1D, to 3D network, which indicates that ligands play important roles in the formation of such coordination architectures. Furthermore, the CD spectrum, thermal, and fluorescent properties of the chiral complex 2 have been investigated in the solid state.

Nitro-functionalization and luminescence quantum yield of Eu(III) and Tb(III) benzoic acid complexes

Abstract: In our pursuit of luminescent lanthanide ion-based coordination polymers, we have isolated several complexes with nitrobenzoic acid ligands and characterized these by X-ray crystallography and luminescence spectroscopy. 2-Nitrobenzoic acid reacts with Eu(III) to form 1, which crystallizes in the P-1 space group, with a = 12.385(3), b = 12.912(3), c = 17.889(4) A, α = 97.49(3), β = 109.64(3) and γ = 101.99(3)°. 3-Nitrobenzoic acid forms a one-dimensional coordination polymer with Eu(III), 2, which crystallizes in the triclinic space group P-1 with a = 9.7100(19), b = 10.579(2), c = 13.361(3) A, α = 77.41(3), β = 88.78(3) and γ = 88.16(3)°. Structures 3 and 4 correspond to the isostructural one-dimensional coordination polymers of Eu(III) and Tb(III), respectively, with the 4-nitrobenzoato anion. These crystallize in the triclinic space group P-1 with a = 9.2242(18), b = 15.102(3), c = 18.587(4) A, α = 75.93(3), β = 82.88(3) and γ = 79.00(3)° for 3 and a = 9.2692(19), b = 15.369(3), c = 18.353(4) A, α = 75.37(3), β = 81.32(3) and γ = 78.15(3)° for 4. Potentiometry, absorption and NMR spectroscopy indicate that in solution only 1 : 1 species are present. All compounds are weakly luminescent as solids and the photophysics of solutions of ligands with Ln(III) in 1 : 1 stoichiometry were studied. Quantum yields around 1 and 3% for Eu(III)-and Tb(III)-containing methanolic solutions were measured.

Discovery, Synthesis, and Characterization of an Isomeric Coordination Polymer with Pillared Kagome Net Topology

Abstract: A topological isomer based on Zn2 paddlewheel, dicarboxylate, and diamine ligands is synthesized by solvothermal methods after careful modulation of the reaction conditions. The new framework is characterized by a pillared Kagome net topology and possesses a sustainable pore structure with high surface area (∼2400 m2/g) and large hexagonal channels (∼15 A).