New Topologically Unique Metal-Organic Architectures Driven by a Pyridine-Tricarboxylate Building Block

Abstract

Two new three-dimensional (3D) coordination compounds, namely a lead(II) coordination polymer (CP) {[Pb3(µ5-cpta)(µ6-cpta)(phen)2]·2H2O}n (1) and a zinc(II) metal-organic framework (MOF) {[Zn2(µ4-cpta)(µ-OH)(µ-4,4′-bipy)]·6H2O}n (2), were hydrothermally assembled from 2-(5-carboxypyridin-2-yl)terephthalic acid (H3cpta) as an unexplored principal building block and aromatic N,N-donors as crystallization mediators. Both products were isolated as air-stable microcrystalline solids and were fully characterized by IR spectroscopy, elemental and thermogravimetric analysis, and powder and single-crystal X-ray diffraction. Structural and topological features of CP 1 and MOF 2 were analyzed in detail, allowing to identify a topologically unique 4,5,5,6-connected net in 1 or a very rare 4,4-connected net with the isx topology in 2. Thermal stability and solid-state luminescent behavior of 1 and 2 were also investigated. Apart from revealing a notable topological novelty, both compounds also represent the first structurally characterized Pb(II) and Zn(II) derivatives assembled from H3cpta, thus opening up the application of this unexplored pyridine-tricarboxylate block in the design of new metal-organic architectures.

Assembled synthesis of luminescent mono/double‐layered 2D and 3D Zn (II)‐based coordination polymers tuned by flexible bis (pyridyl)propane‐1,2‐diamines and diverse organic dicarboxylates

“…Therefore, the whole structure of 7 can be represented to binodal (4,4)‐c net with the Schläfli symbol of (4.5 2 .8 3 )(4.5 3 .7 2 ). To the best of our knowledge, this is a new topological net, although some other binodal (4,4)‐c nets have been reported, such as bbf , pts , isx , ptr and dia …”

A series of novel Cu-based MOFs: syntheses, structural diversity, catalytic properties and mimic peroxidase activity for colorimetric detection of H2O2

“…These ligands possess a variety of coordination sites, one picolinate N and carboxylate O donors and rotatable C–C bond, which have the potential to generate the structural diversity of MOFs. 32 MOFs 1–3 display efficient catalytic performance for the alkane oxidations under ambient pressure with mild reaction conditions. In addition, they showed ideal peroxidase-like activity and could be applied for the colorimetric detection of H 2 O 2 with high sensitivity and selectivity.…”

Synthesis, Crystal Structure, Thermal Analysis, and DFT Calculations of Molecular Copper(II) Chloride Complexes with Bitopic Ligand 1,1,2,2-tetrakis(pyrazol-1-yl)ethane

“…These ligands contain two or more separated metal-binding sites that allow them to form a wide variety of structures [1][2][3]. The design of a linker structure between the binding sites permits tuning the properties of the materials based on coordination compounds with multitopic ligands [4][5][6][7]. Applications of functional materials containing such ligands include gas storage [8][9][10], membrane separations [11], electrochemical devices [12], sensing materials [13,14], drug delivery systems [15,16], enantiomer separations [17], and catalysis in fine organic synthesis [18,19].…”