Synthesis, Crystal Structure, Luminescence and Magnetism of Three Novel Coordination Polymers Based on Flexible Multicarboxylate Zwitterionic Ligand

Abstract

Three novel zwitterionic coordination polymers, namely, {[Zn(HCbdcp) 2 ]·H 2 O} (1), {[Mn(Cbdcp)]·3H 2 O} (2) and {[Cu 2 (Cbdcp)(HCbdcp)Cl·H 2 O]·2H 2 O} (3), Cbdcp = 3,5-dicarboxy-1-(4-carboxybenzyl)pyridin-1-ium, have been prepared by a hydrothermal method and characterized by X-ray single crystal diffraction analysis, powder X-ray diffraction analysis, IR spectroscopy, and thermogravimetric analysis. With the changing of metal centers, these complexes show distinct structures: a mononuclear 2D 4 4 -sql network for 1, a 3D 6,6-connected-type topology for 2 and a novel dinuclear 2D layer for 3. These diverse architectures prove that coordination geometry of metal ions, coordination modes of carboxylate groups and the rotationally flexible CH 2 linker played significant roles in the construction of CPs; moreover, they also indicated that H 3 CbdcpCl is an ideal organic candidate for the building of novel structures. The solid-state luminescent properties of complexes 1-3 were investigated, respectively. In addition, the magnetic properties of 2 and 3 were studied and both of them exhibit antiferromagnetic behaviors.

Solvothermal Synthesis, Crystal Structure, and Characterization of a Heterometallic Iodoplumbate

“…The results show that bivalent or trivalent metal ions can form such complex cations as templates. On the other hand, it is well known that d 10 Cu + ions can exhibit outstanding luminescence properties [21]. However, its coordination fashion ([CuI 4 ] tetrahedron) is evidently different from Pb 2+ .…”

Synthesis, Structure, and Properties of Coordination Polymers Based on 1,4-Bis((2-methyl-1H-imidazol-1-yl)methyl)benzene and Different Carboxylate Ligands

“…Coordination polymers (CPs), a series of solid-state materials with an infinite framework structure, are generated by the self-assembly of metal ions and organic ligands [1][2][3][4]. CPs are continuously gaining attention owing to their appealing structures and various potential applications in luminescence, catalysis, magnetism, drug delivery, gas adsorption and separation, and so on [5][6][7][8][9][10][11]. It is apparent that certain structures give materials unique properties, which are crucial for the application of the material [12][13][14].…”

Lanthanide Coordination Polymers as Luminescent Sensors for the Selective and Recyclable Detection of Acetone

“…Compared with other luminescent sensors, Ln-CPs based luminescent sensing materials have been a rapidly developing area due to their outstanding merits such as high surface area, easily designed crystal structures, stable frameworks, and permanent porosity, as well as exposed active sites [12][13][14]. Recently, the zwitterionic type of organic ligands have drawn our attention [15,16], which simultaneously bear positive and negative charges with a certain separated distance on the coordination skeleton endowing special physical properties, for example, improved adsorption selectivity of gases or vapors [17]. However, to date, the Ln-CPs materials reported are usually based on the common organic ligands, while the study of Ln-CPs based on the zwitterionic types of organic ligands have rarely been reported [18].…”