{[1.1.1]Cryptand/imidazole}: a prototype composite kinetic molecular device for automatic NMR variable pH reaction monitoring.
نویسندگان
چکیده
منابع مشابه
NMR Studies on Li+, Na+ and K+ Complexes of Orthoester Cryptand o-Me2-1.1.1
Cryptands, a class of three-dimensional macrobicyclic hosts ideally suited for accommodating small guest ions, have played an important role in the early development of supramolecular chemistry. In contrast to related two-dimensional crown ethers, cryptands have so far only found limited applications, owing in large part to their relatively inefficient multistep synthesis. We have recently desc...
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The combined activity of the 1.1.1-cryptand and of a dicopper(II) bistren cryptate complex including chloride makes the Cl(-) ion be continuously and slowly delivered to the solution, without any external intervention. The 1.1.1-cryptand slowly releases OH(-) ions, according to a defined kinetics, and each OH(-) ion displaces a Cl(-) ion from the cryptate. Chloride displacement induces a sharp ...
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ورودعنوان ژورنال:
- Chemistry
دوره 17 5 شماره
صفحات -
تاریخ انتشار 2011