Copper Complex Cation Templated Gadolinium(III)–Isophthalate Frameworks

Abstract

Crystal engineering provides a powerful tool for the design and construction of coordination frameworks with unique structural motifs and tunable physical properties.[1, 2] Many heterometallic frameworks possess interesting physical properties, [3][4][5][6][7] which arise from the interactions between two distinct metal ions. However, 3D cavity lanthanide frameworks with trapped or bonded transition-metal complexes are rare. A typical strategy utilized to construct lanthanidetransition-metal frameworks is self-assembly from mixed metal ions and ligands containing hybrid donor atoms, such as carbonyl, [8] cyanide, [9] pyridine-carboxylate ligands.

Syntheses, Crystal Structure and Fluorescence Property of Copper (II) Complex Constructed from 5-Sulfosalicylic Acid

“…Over the past decades, the design and synthesis of metal-organic frameworks (MOFs), which is based on the selection of ligands and metal ions has already become a very intersting research field [1,2]. It is clear that the research of transition metal coordination polymers (CPs) is one of the most important fields in the study of coordination polymers.…”

An unprecedented seven-connected coordination network based on octanuclear supertetrahedral lead(II) cluster as a secondary building unit

“…On the other hand, compared with the transitional and lanthanide metal ions, lead(II) cation presents larger radius, wider coordination numbers (2-10), more variable stereochemical activity with the mixing of the 6p orbital and 6s orbital, which provide unique opportunities for the construction of unusual network topologies [17] and some important properties of luminescence, nonlinear optic and ion exchange [18][19][20]. Taking these points into account, by using Pb(NO 3 ) 2 as the metal source and an asymmetric benzene-1,2,3-tricarboxylic acid as ligand, we have fortunately isolated an unprecedented coordination framework {[(Me 2 NH 2 ) 4 [Pb 8 (μ 4 -O)(1,2,3-btc) 6 ]] 2 ·6DMF·2H 2 O} n (1) with octanuclear super- 18 ] clusters as nodes. As we know, this compound not only has a new 7-connected network topology but also represents the first example of octanuclear Pb(II) supertetrahedral clusters.…”

“…S2). From the topological point of view, if the octanuclear lead(II) SBUs considered as a seven-connected node, the framework can be rationalized as a uninodal 7-connected topology with a Schläfli symbol of (3 6 ( Fig. 3c).…”

“…Organic aromatic polycarboxylate ligands containing multidentate O donors, such as 1,3-benzenedicarboxylate, 1,4-benzenedicarboxylate, 1,3,5-benzenetricarboxylate, 1,2,4,5-benzenetetracarboxylate and others, have been extensively employed in the construction of a rich variety of coordination polymers with fascinating structures and potential applications [6][7][8][9][10], due to their versatile coordination conformations and strong coordination ability. In comparison, benzene-1,2,3-tricarboxylic acid (1,2,3-H 3 btc, hemimellitic acid) ligand has distinctive characteristics such as the lower molecular symmetry as well as the versatile coordination capability of forming both short bridges by the carboxylate groups and long bridges by the benzene ring that has led to a few novel coordination networks [11].…”

Synthesis, structure and XPS of a novel two-dimensional CuII–EuIII heterometallic–organic framework

“…However, most of heterometallic complexes obtained by conventional self-assembly techniques possess low-dimensional structures [6-8]; thus, they are not thermally stable and affect their application in functional materials. The synthesis of polymeric compounds, especially two (or three)-dimensional openframework 4f-3d heterometallic coordination polymers is still less successful [1,5,9,10].Recently, hydrothermal techniques have shown great advantages over other methods for the synthesis of high-dimensional coordination compounds [1,11]. In a hydrothermal synthesis, even insoluble reagents such as metal oxides which are not suitable for the conventional solution synthesis can be used, and thermally stable coordination compounds are usually able to form from a hydrothermal reaction system.…”