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Metal Organic Frameworks (MOFs), built from metal ions/clusters coordinated by organic linkers/bridging ligands, have emerged as an extensive class of crystalline hybrid materials with exceptional ultrahigh porosity and enormous internal surface areas. Out of several hallmarks possessed by MOFs, one is their topologically diverse and aesthetically pleasing framework structures which can be adjusted and tuned with the state-of-art techniques, and molecular simulations, different geometry, and connectivity of a linker to the respective metal cluster. In this critical review, we intend to highlight the scope of carboxylate-based MOFs by providing a varied range from their topology analysis and molecular simulations to different synthetic routes. Moreover, providing insights to reticular chemistry of carboxylate MOFs and the importance of Post-Synthetic Modification (PSM), an alternative route to introduce functional groups within these MOFs. We have also tried to identify the possible loopholes that can provide an extensive opportunity to young researchers that can lead to a detailed exploration in the field of novel MOFs. [ABSTRACT FROM AUTHOR]

One novel two-fold interpenetrating 3D coordination polymer [Dy(L)(SO4)(H2O)] (1) (H2L = 6-hydroxypyridine-3-carboxylic acid) has been synthesized and characterized by elemental analyses and single-crystal X-ray diffraction, respectively. Interestingly, L and sulfate anions came from thein situcleavage of a sulfide–sulfide bond of the flexible 6,6′-dithiodinicotinic acid in the hydrothermal reactions. In the structure of1, the L ligands connect the (–Dy–SO4–)∞inorganic rod secondary building units to form a 3D (3,5)-connected (42.65.83)(42.6) net, interlocking the 3D network leads to a twofold parallel interpenetration network. In addition, thermal stability of1was also investigated. [ABSTRACT FROM AUTHOR]