Coordination polymer

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

Resolution of a Racemic Small Molecular Alcohol by a Chiral Metal−Organic Coordination Polymer through Intercalation

Abstract: The resolution of racemic 2-butanol through intercalation by a chiral metal−organic coordination polymer [Cu(PPh3)(N,N‘-(2-pyridyl-(4-pyridyl methyl)-amine))1.5]·ClO4 (1) constructed by an achiral building block provides new insight into the optical-resolution field. This provides encouragement for the role of crystal engineering in separating racemic mixtures and revives the historic practice of mechanically separating crystals of opposite chirality. Crystal data for 1: C69H63Cl2Cu2N9O8P2, trigonal, R3, a = 13.7382(2), b = 13.7382(2), c = 32.72480(10) A, α = β = 90°, γ = 120°, V = 5348.78(11) A3, Z = 3, M = 1406.20, Dc = 1.310 Mg m-3, R1 = 0.0703, wR2 = 0.1457, S = 0.928, T = 293 K, μ = 0.774 mm-1; crystal data for 1·1.5 (S)-2-butanol (2): C75H78Cl2Cu2N9O9.5P2, trigonal, R3, a = 13.7282(4), b = 13.7282(4), c = 32.7155(12) A, α = β = 90°, γ = 120°, V = 5339.6(11) A3, Z = 3, M = 1517.36, Dc = 1.416 Mg m-3, R1 = 0.0454, wR2 = 0.0605, S = 1.019, T = 293 K, μ = 0.783 mm-1.

Ultrahigh luminescence quantum yield lanthanide coordination polymer as a multifunctional sensor

Abstract: The investigation and development of advanced multifunctional and sensitive sensors with high luminescent quantum yield and the capability of detecting different analytes, such as metal ions, is imperative. Due to its inherent properties the lanthanide coordination complex is one candidate for sensing applications, particularly for multifunctional sensors. Herein, we present two series of alkali ion decorated lanthanide coordination polymers (Ln-CPs), which show ultrahigh luminescence quantum yields (QYs) of 77% (1a) and 92% (2a). To the best of our knowledge, 1a represents the first trifunctional lanthanide complex sensor that can simultaneous detect and discriminate three different analytes, namely H+/Cd2+/Cr3+ through a multimode optical response. Furthermore, the limit of detection (LOD) for Cr3+ is an ultralow value of 2.0 × 10-9 M with a sensing time of 2 h, which is comparable to the most sensitive Cr3+ chemosensor. More interestingly, 92% (2a) is an unprecedented luminescence QY among the reported lanthanide coordination complexes.

Experimental and Theoretical Characterization of the Magnetic Properties of CuF2(H2O)2(pyz) (pyz = pyrazine): A Two-Dimensional Quantum Magnet Arising from Supersuperexchange Interactions through Hydrogen Bonded Paths

Abstract: The structural, electronic, and magnetic properties of the new linear chain coordination polymer CuF2(H2O)2(pyz) (pyz = pyrazine) were determined by single crystal X-ray diffraction at various temperatures, SQUID magnetometry, pulsed-field magnetization, ESR, muon-spin relaxation (μSR), and electronic structure calculations Each Cu2+ ion of CuF2(H2O)2(pyz) is located at a distorted CuF2O2N2 octahedron with axial elongation along the Cu−N bonds These octahedra are tethered together by strong F···H−O hydrogen bonds to yield two-dimensional (2D) square nets in the bc-plane that are linked along the a-direction by pyrazine linkages Measurements of the g-factor by ESR along with first principles density functional theory electronic structure calculations show that the magnetic orbital of the Cu2+ ion lies in the CuF2O2 plane thus forming a 2D antiferromagnetic square lattice A broad maximum observed in χ(T) at 10 K indicates a modest spin exchange interaction through the Cu−F···H−O−Cu supersuperexchange pa

Three-Dimensional Robust Porous Coordination Polymer with Schiff Base Site on the Pore Wall: Synthesis, Single-Crystal-to-Single-Crystal Reversibility, and Selective CO2 Adsorption

Abstract: A three-dimensional (3D) robust porous coordination polymer, {[Cu(azpy)(glut)](H2O)2}n (1) (azpy = N,N′-bis-pyridin-4-ylmethylene-hydrazine, glut = glutarate), has been synthesized and structurally characterized. Single crystal X-ray diffraction analysis reveals that each of paddle-wheel Cu2(CO2)4 units is connected with glutarates in the crystallographic bc plane to form a two-dimensional (2D) sheet which is pillared by an azpy linker to afford a 3D porous framework. Controlled heating of the as-synthesized crystal 1 at ∼150 °C under reduced pressure causes a color change of {[Cu(azpy)(glut)]}n (1a) from deep green to light green. The structure determination of the dehydrated compound shows the same framework structure as that of {[Cu(azpy)(glut)](H2O)2}n (1) with the only difference of the nonexistence of lattice water molecules resulting in a large void in the framework. The dehydrated light green crystal 1a regenerates the virgin as-synthesized crystal 1 with the formula of {[Cu(azpy)(glut)](H2O)2}n u...

A Novel Five-Connected BN Topological Network Metal−Organic Framework Mn(II) Cluster Complex

Abstract: Hydrothermal reaction of MnCl2·4H2O with H3PTC (PTC = pyridine-2,4,6-tricarboxylate) yields a novel three-dimensional manganese(II) coordination polymer, [Mn2(OH)(H2O)(PTC)] (1), constructed by Mn4 clusters and PTC linkers. Compound 1 displays five-connected BN topology, and there exists weak antiferromagnetic exchange interactions between the manganese(II) ions with g = 2.02, Jwb/k = −0.96 K, and Jbb/k = −1.07 K.