Li, Yun’s team published research in Crystal Growth & Design in 20 | CAS: 19959-71-8

Crystal Growth & Design published new progress about 19959-71-8. 19959-71-8 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Pyridine, name is 4-(1H-Pyrazol-4-yl)pyridine, and the molecular formula is C8H7N3, Computed Properties of 19959-71-8.

Li, Yun published the artcileA Metal-Ligand Layer Compatible with Various Types of Pillars for New Porous Coordination Polymers, Computed Properties of 19959-71-8, the publication is Crystal Growth & Design (2020), 20(10), 7021-7026, database is CAplus.

Pillared-layer structures are classic for porous coordination polymers (PCPs), but suitable metal-ligand layers for such structures are rare. Here, the authors report a cationic {Zn2(pzdc)}+ (H3pzdc = 3,5-pyrazoledicarboxylic acid) layer compatible with various types of pillar ligands. Solvothermal reactions of Zn(NO3)2·6H2O and H3pzdc with 4-(pyridin-4-yl)-1H-pyrazole (Hpypz), 1,4-benzenedicarboxylic acid (H2bdc), or 2-amino-1,4-benzenedicarboxylic acid (H2abdc) in a mixed solvent of H2O and N,N-dimethylformamide (DMF) produced three pillared-layer PCPs, namely [Zn4(pzdc)2(pypz)2]·guest (1), [Zn4(pzdc)2(bdc)(H2O)1.53(DMF)0.47]·guest (2), and [Zn4(pzdc)2(abdc)(H2O)1.52(DMF)0.48]·guest (3), resp. Single-crystal X-ray analyses revealed that the {Zn2(pzdc)}+ layers are fully pillared by pypz– in 1 and half pillared by bdc2- and abdc2- in 2 and 3, because the anionic pillars possess different charges. Consequently, 1 shows one-dimensional (1D) channels with a small porosity and 2 and 3 show 2D channels with large porosities, both of which were verified by N2 and CO2 adsorption isotherms. While 1 has no coordinated solvent mols. and exhibits a high water stability, 2 and 3 possess coordinated solvent mols. and quickly transform to crystals of 2D coordination networks in water, [Zn4(pzdc)2(OH)2(H2O)6]·H2bdc·4H2O (4) and [Zn4(pzdc)2(H2abdc)(OH)2(H2O)5]·2H2O (5), resp., which can be further exfoliated into ultrathin nanosheets in an ammonia solution A new metal-ligand layer can adopt various types of pillars to give a series of pillared-layer PCPs with tunable pillar densities, porosities, and water stabilities. The water-instable ones can be exfoliated to ultrathin nanosheets with intermediates suitable for single-crystal diffraction characterization.

Crystal Growth & Design published new progress about 19959-71-8. 19959-71-8 belongs to pyrazoles-derivatives, auxiliary class Pyrazole,Pyridine, name is 4-(1H-Pyrazol-4-yl)pyridine, and the molecular formula is C8H7N3, Computed Properties of 19959-71-8.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics