A Mixed-Cluster Approach for Building a Highly Porous Cobalt(II) Isonicotinic Acid Framework: Gas Sorption Properties and Computational Analyses

Abstract

A unique channel-type metal-organic framework (MOF) built up from mixed square-planar Co(μ-OH)(μ-OH) and cuboidal Co(μ-OH) clusters with an isonicotinic acid ligand has been successfully fabricated that demonstrates the highest specific surface area and high H uptake capacities among all of the cobalt(II) isonicotinic acid frameworks reported so far.

Assembly of Two Metal–Organic Frameworks Based on Distinct Cobalt Dimeric Building Blocks Induced by Ligand Modification: Gas Adsorption and Magnetic Properties

“…In comparison, 1 can only exhibit limited amounts of CH 4 (20.8 and 10.9 cm 3 g –1 ) and N 2 (5.4 and 2.8 cm 3 g –1 ) under 1 bar at 273 and 298 K, respectively. The high CO 2 uptake in 1 may be related with the significant quadruple moment of CO 2 molecules (−1.34 × 10 –39 cm 2 ) arising from the strong dipolar CO bonds, which facilitates efficient interaction between CO 2 molecules and frameworks, and further improves the CO 2 uptake …”

Integrating the Pillared-Layer Strategy and Pore-Space Partition Method to Construct Multicomponent MOFs for C2H2/CO2 Separation

“…Detailed structure analysis of FJU-6 shows that its asymmetric unit contains four and a half Co II ions, four INA ligands, a half BDC ligand, one μ 3 -O atom, a half μ 4 -O atom, and one disordered [NH 2 (CH 3 ) 2 ] + derived from the decomposition of DMA solvents. 39 According to bondvalence-sum (BVS) calculations, 40 all Co atoms are divalent cations, and μ 3 -O and μ 4 -O atoms are assigned as OH − and O 2− (Table S2). 3c).…”

Co(II)-based Metal–Organic Frameworks and Their Application in Gas Sorption and Solvatochromism

“…Over the past few years the design and development of metal–organic frameworks (MOFs) have attracted tremendous attention of the wider scientific community, not only because of their molecular connectivity and topologies − but also due to their wide range of societally and industrially relevant potential applications such as heterogeneous catalysis, − drug delivery, − molecular recognition, , sensing, optics, luminescence, , ion exchange, ionic/electronic conductivity, , magnetism, and gas sorption. − In addition, similar to naturally occurring zeolites, MOFs also contain large cavities in their structures; , however, the versatility and adaptively in the coordination mode of the linkers together with the geometrical preference of the constitutive metal ions provide an advantage to tune the porosity and topology of the resultant architecture and thus provide advantage over the zeolites and mesoporous silica. , The MOFs can be synthesized by using an organic linker and a suitable metal ion. However, there are several reaction factors such as temperature, pH, metal-to-ligand ratios, solvent systems, and so on that influence the topology of the resultant architecture.…”