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• 100-21-0 terephthalic acid 
• 7732-18-5 water 

Relevant academic research and scientific papers

Structuralization of Ca2+-Based Metal-Organic Frameworks Prepared via Coordination Replication of Calcium Carbonate

The emergence of metal-organic frameworks (MOFs) as potential candidates to supplant existing adsorbent types in real-world applications has led to an explosive growth in the number of compounds available to researchers, as well as in the diversity of the metal salts and organic linkers from which they are derived. In this context, the use of carbonate-based precursors as metal sources is of interest due to their abundance in mineral deposits and their reaction chemistry with acids, resulting in just water and carbon dioxide as side products. Here, we have explored the use of calcium carbonate as a metal source and demonstrate its versatility as a precursor to several known frameworks, as well as a new flexible compound based on the 2,5-dihydroxybenzoquinone (H2dhbq) linker, Ca(dhbq)(H2O)2. Furthermore, inspired by the ubiquity and unique structures of biomineralized forms of calcium carbonate, we also present examples of the preparation of superstructures of Ca-based MOFs via the coordination replication technique. In all, the results confirm the suitability of carbonate-based metal sources for the preparation of MOFs and further expand upon the growing scope of coordination replication as a convenient strategy for the preparation of structuralized materials.

Mechanochemical synthesis and characterization of alkaline earth metal terephthalates: M(C8H4O4)·nH 2O (M = Ca, Sr, Ba)

The mechanochemical synthesis offers an easy access to obtain alkaline earth metal terephthalates M(C8H4O4) ·nH2O (M = Ca, Sr, Ba). In the presented study we describe for the first time the mechanochemical synthesis of powders of Ca(C 8H4O4)·3H2O, Ca(C 8H4O4), Sr(C8H4O 4)·H2O, and Ba(C8H4O 4), which so far were only synthesized as single crystals from aqueous solutions or by reactions in an autoclave. Furthermore, a new hydrate Ba(C8H4O4)·2(1.5)H2O, not described so far in the literature, was prepared. All compounds were characterized by X-ray powder diffraction, thermal analysis, elemental analysis, FT-IR, and MAS NMR spectroscopic measurements. Copyright

Toward sustainable syntheses of Ca-based MOFs

We report the use of benign and green precursors, including waste chicken eggshells and PET (polyethylene terephthalate) from recycled plastic bottles, for the facile synthesis of a variety of calcium-based metal-organic frameworks (Ca-MOFs), using water based and mechanochemical synthesis techniques.

Hydrated and dehydrated Ca-coordination polymers based on benzene-dicarboxylates: Mechanochemical synthesis, structure refinement, and spectroscopic characterization

A series of Ca-based coordination polymers were prepared mechanochemically by milling Ca(OH)2 with phthalic acid (H2oBDC), isophthalic acid (H2mBDC), and terephthalic acid (H2pBDC). The hydrated compounds [Ca(oB