Sutton, Cara E.; Harding, Lindsay P.; Hardie, Michaele; Riis-Johannessen, Thomas; Rice, Craig R. published an article in 2012, the title of the article was Allosteric Effects in a Ditopic Ligand Containing Bipyridine and Tetra-aza-crown Donor Units.Quality Control of [2,2′-Bipyridine]-3,3′-diamine And the article contains the following content:
The authors report the synthesis and coordination properties of a macrocyclic ligand containing bipyridine and tetraazacrown N-donor units. Both sites complex Cu(II), but the donor mode of tetraazacrown unit is controlled by the binding state of the bipyridine unit. An allosteric effect, characterized by neg. cooperative binding of a second Cu(II), is assigned to the tetraazacrown being able to coordinate through only three of its N-donors when the bipyridine site is occupied. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Quality Control of [2,2′-Bipyridine]-3,3′-diamine
The Article related to preparation macrocyclic bipyridine tetraazacrown ligand copper chloro complex, solution speciation macrocyclic bipyridine tetraazacrown ligand copper chloro complex, allosterism copper complexation macrocyclic bipyridine tetraazacrown ligand, crystal structure copper chloro macrocyclic bipyridine tetraazacrown ligand complex and other aspects.Quality Control of [2,2′-Bipyridine]-3,3′-diamine