Crown ethers are heterocycles that, in their simplest form, are cyclic oligomers of dioxane.
The essential repeating unit of any simple crown ether is ethyleneoxy, ie,-CH2CH2O-, which …

Cation− π interactions occur between cations and electron-rich species such as double
bonds, triple bonds, and arenes. The π-electron system may be neutral or anionic, but the …

/. Introduction The cation-macrocycle portion of this review was treated in two earlier
Chemical Reviews articles (19741 and 19852). The present review updates this material …

Fluorescent indicators sensitive to cytosolic concentrations of free Na+ have been
synthesized and characterized. They consist of a crown ether, 1, 7-diaza-4, 10, 13 …

The two-volume Encyclopedia of Supramolecular Chemistry offers authoritative, centralized
information on a rapidly expanding interdisciplinary field. User-friendly and high-quality …

Repeat tracts of guanine bases found in DNA and RNA can form tetraplex structures in the
presence of a variety of monovalent cations. Evidence suggests that guanine tetraplexes …

Calix [TV] arenes {N= 4, 6, 8) have been converted into polyfunctional esters and ketones in
a search for new macrocycles capable of showing ionophoric activity. Treatmentwith alkyl …

Until the 196Os, complexation of alkali and alkaline earth metal cations was problematic.
Although such Ca2+ binders as ethylenediaminetetraacetic acid, EDTA, were well known …

Chiral ferrocenylphosphine ligands modified by monoaza or diaza crown ethers of varying
ring sizes and linker chain lengths (8a-e, 9) were synthesized. The reaction of the phosphine …

The interaction of alkali metal ions with arenes such as benzene or substituted benzenes
has been documented in a variety of ways. This paper reviews the experimental evidence …