Reference of 49669-22-9, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 49669-22-9, name is 6,6′-Dibromo-2,2′-bipyridine. In an article£¬Which mentioned a new discovery about 49669-22-9
Synthesis of crownophanes possessing bipyridine moieties: bipyridinocrownophanes exhibiting perfect extractability toward Ag+ ion
Novel crownophanes with two bipyridine moieties (bipyridinocrownophanes 1a and 1b) were conveniently prepared by means of intramolecular [2+2] photocycloaddition of vinylbipyridine derivatives. In the liquid-liquid extraction of heavy metal cations, 1a and 1b exhibited perfect selectivity toward Ag+ with high efficiency. It was found that the ethereal oxygen atoms and the four nitrogen atoms in 1a and 1b acted as ligating sites, according to the high extractability and complexing stability constant for Ag+ compared to those of the corresponding pyridinocrownophanes 4a and 4b. 1H NMR and ESI-MS analyses suggested that the crownophanes formed a 1:1 complexes with the Ag+ ion.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.49669-22-9. In my other articles, you can also check out more blogs about 49669-22-9
Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI