An Isomeric Copper-Diisophthalate Framework Platform for Storage and Purification of C2H2 and Exploration of the Positional Effect of the Methyl Group was written by Lin, Shengjie;Fan, Lihui;Zhou, Ping;Xu, Tingting;Jiang, Zhenzhen;Hu, Simin;Chen, Jingxian;He, Yabing. And the article was included in European Journal of Inorganic Chemistry in 2021.Category: bromides-buliding-blocks This article mentions the following:
Three isostructural metal-organic frameworks (MOFs) based on dicopper paddlewheels and dimethyl-functionalized linear diisophthalate ligands were solvothermally constructed, with the aim to study their performance regarding acetylene (C2H2) storage as well as separation and purification and to further understand the positional effect of the weakly polarized Me functionality. Isotherm measurements and IAST selectivity analyses revealed that the three compounds exhibited the promising potential for storing C2H2 and recovering C2H2 from CO2 (CO2) and methane (CH4) at ambient conditions. Also, their C2H2 adsorption properties can be tailored and optimized by altering the relative position of the Me substituents immobilized in the organic linkers. At 298 K and 1 atm, the C2H2 uptake capacities vary from 173.0 to 183.6 cm3 (STP) g-1, while the C2H2/CH4 and C2H2/CO2 adsorption selectivities are at 24.5-26.6 and 4.34-4.70 for the equimolar gas mixtures The ortho-dimethyl-modified MOF outperformed better than the other two MOF isomers. Rational arrangement of functional groups can to some extent improve gas adsorption properties. Although the property discrepancy caused by the less-polar Me group is not as large as that by Lewis-basic N atoms, this is the 1st exptl. demonstration of the positional effect of Me group on C2H2 adsorption. In the experiment, the researchers used many compounds, for example, 2,5-Dibromo-1,3-dimethylbenzene (cas: 100189-84-2Category: bromides-buliding-blocks).
2,5-Dibromo-1,3-dimethylbenzene (cas: 100189-84-2) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Category: bromides-buliding-blocks
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary