Cryptand-like anion receptors
WebSep 6, 2010 · About the same time the term cryptand appeared in reference to another bicyclic compound that was selective for alkaline-earth ions. Since the first report these … WebMay 23, 2024 · This design principle has been used in NH hydrogen-bonding anion receptors including Lehn’s cationic aza-cryptands , Sessler’s neutral pyrrolo …
Cryptand-like anion receptors
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WebAug 1, 2024 · Both the inner voids (cavity and cleft) are accessible to various guests such as metal ions, anions and, neutral molecules. The pyrrole ring offers hydrogen bond donor NH groups and its... WebOct 1, 2010 · Cryptands and aza-cryptands have been well-established to work as versatile anionic receptors for negatively charged guest species, inter alia, in their protonated …
WebMay 2, 2024 · Considered in concert, these molecular constructs have allowed advances in applied supramolecular chemistry; to date, they have been exploited for selective guest encapsulation studies, anion... WebOct 1, 2001 · Bis-tren cryptands can be conveniently used for making anion receptors operating through the metal–ligand interaction. In fact, each tren subunit can coordinate, …
WebFirst, the cationic azaphosphatranes together with the metal ions provide an overall +12 charge, offering a strong electrostatic driving force for anion binding. Second, the … WebInitially anion binding of cage 1 was accessed by 1H NMR titrations in DMSO-d 6 /0.5% H 2 O and compared with a previously reported TREN-based tripodal anion receptor 2 (Table 1).15 Surprisingly, the hexa-urea cage 1, which is expected to be a strong anion receptor, shows a similar Cl– affinity to acyclic tris-urea 2. This is attributed to
WebAntonella Dalla Cort, Paolo De Bernardin, Gianpiero Forte and Francesco Yafteh Mihan (DOI: 10.1039/b926222a) give an overview on the use of metal-salophen-based receptors for anions in which the anion is bound …
WebNov 21, 2024 · Binding hydrophilic anions such as sulfate in water is a significant academic challenge, in particular for neutral receptors. To achieve this, typically a large molecular … chulefonWebDec 20, 2024 · The concept of anion receptor can date back to the late 1960s,1and has become one revolutionary branch of supramolecular chemistry, with rich applications ranging from chemistry, biology to industry separations during the past decade.2Of particular importance and interests are the development of novel adsorbents which can selectively … destry brownWebCryptand-like anion receptors Author: Sung Ok Kang, José M. Llinares, Victor W. Day, Kristin Bowman-James Source: Chemical Society reviews 2010 v.39 no.10 pp. 3980 … destry brackWebOct 1, 2001 · Bis-tren cryptands can be conveniently used for making anion receptors operating through the metal–ligand interaction. In fact, each tren subunit can coordinate, according to a trigonal bipyramidal mode, a Cu (II) centre, which leaves one axial position available for anion binding. chuletator 3000WebJun 23, 2024 · One topical area of supramolecular chemistry is the binding of anionic species but despite the importance of anions in diverse cellular processes and for … destry abbott wifeWebReceptors Abstract A tosylated azacryptand readily protonates at the bridgehead amines, becoming a potential ditopic anion receptor. The in-in conformation of the amines facilitates encapsulation of two bromide guests and represents the first structural evidence that a proton cage cryptate can bind two anions internally. * destry hallWebThe impact of the solvent environment on the stabilization of the complexes formed by fluorine (T-F) and cyanide (T-CN) substituted tweezers with halide anions has been investigated theoretically. The study was carried out using computational methodologies based on density functional theory (DFT) and symmetry adapted perturbation theory … destryed couch ong