Receptors for anions

Itsikson, Nadezhda A.; Morzherin, Yu. Yu.; Матерн, А. И.; Чупахин, О. Н.

doi:10.1070/rc2008v077n09abeh003762

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…67,68 This structure can be viewed as the anion counterpart of the well-studied transition-metal cascade complexes, where two metal cations within neutral cryptands are bridged by an anion. 22,29,30 Bowman-James et al also calculated a log K of 3.64 by 1 H NMR.…”

Section: 21mentioning

confidence: 99%

Cryptand-like anion receptors

et al. 2010

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The design of supramolecular hosts for anions began with simple diaza bicycles, named katapinands, and has evolved over the last 40 years to a number of elegantly designed receptors capable of binding many different anions. 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 simple bicycles, a vast arena of hosts has appeared, including acyclic, monocyclic, and other multicyclic supramolecular receptors. Studies of these systems have revealed considerable information about anion coordination chemistry, including the fact that many of these complexes mimic their transition-metal corollaries in terms of coordination numbers. However, for anions interactions occur via H-bonding most often, rather than the coordinate covalent or dative bonds observed in transition-metal coordination. This critical review examines the design of enclosed, primarily bicyclic cryptands as hosts for anions, with a small scattering of higher polyhedra when deemed appropriate to the discussion. In order to show the development (evolution) of the field, key examples of early work will be noted and compared with more recent developments (136 references).

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Section: 21mentioning

confidence: 99%

Cryptand-like anion receptors

et al. 2010

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“…Secondary bonding interactions (SBIs), [1–4] also called noncovalent interactions, are important for fundamental chemistry and its multidisciplinary applications [5–16] . One of the most interesting applications of SBIs is ion recognition, sensing, and transport by neutral compounds; and anion recognition and sensing are more challenging than those of cations [4,7–12,17–19,20] . Amongst anions, halides [Hal] − (Hal=F, Cl, Br, I) are essentially important for living beings and their environment [19]…”

Section: Introductionmentioning

confidence: 99%

“…Secondary bonding interactions (SBIs), [1][2][3][4] also called noncovalent interactions, are important for fundamental chemistry and its multidisciplinary applications. [5][6][7][8][9][10][11][12][13][14][15][16] One of the most interesting applications of SBIs is ion recognition, sensing, and transport by neutral compounds; and anion recognition and sensing are more challenging than those of cations. [4,[7][8][9][10][11][12][17][18][19]20] Amongst anions, halides [Hal] À (Hal = F, Cl, Br, I) are essentially important for living beings and their environment.…”

Section: Introductionmentioning

confidence: 99%

Halide Complexes of 5,6‐Dicyano‐2,1,3‐Benzoselenadiazole with 1 : 4 Stoichiometry: Cooperativity between Chalcogen and Hydrogen Bonding

Radiush,

Wang,

Chulanova

et al. 2023

ChemPlusChem

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The [M4–Hal]– (M = the title compound; Hal = Cl, Br, and I) complexes were isolated in the form of salts of [Et4N]+ cation and characterized by XRD, NMR, UV‐Vis, DFT, QTAIM, EDD, and EDA. Their stoichiometry is caused by a cooperative interplay of σ‐hole‐driven chalcogen (ChB) and hydrogen (HB) bondings. In the crystal, [M4–Hal]– are connected by the π‐hole‐driven ChB; overall, each [Hal]– is six‐coordinated. In the ChB, the electrostatic interaction dominates over orbital and dispersion interactions. In UV‐Vis spectra of the M + [Hal]– solutions, ChB‐typical and [Hal]–‐dependent charge‐transfer bands are present; they reflect orbital interactions and allow identification of the individual [Hal]–. However, the structural situation in the solutions is not entirely clear. Particularly, the UV‐Vis spectra of the solutions are different from the solid‐state spectra of the [Et4N]+[M4–Hal]–; very tentatively, species in the solutions are assigned [M–Hal]–. It is supposed that the formation of the [M4–Hal]– proceeds during the crystallization of the [Et4N]+[M4–Hal]–. Overall, M can be considered as a chromogenic receptor and prototype sensor of [Hal]–. The findings are also useful for crystal engineering and supramolecular chemistry.

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“…Coordination chemistry of anions has become a specific part of coordination chemistry as a whole. In the recent years, macrocyclic molecules, specifically calix[n]arenes, have been extensively used in the synthesis of receptors for anions [7,10,[12][13][14][15][16][17]. The present review summarizes and analyzes available data on calixarene-based anionic receptors, published since 2004 till 2008.…”

Section: Introductionmentioning

confidence: 99%

“…The fact that MacKinnon was awarded Nobel Prize for his studies on ClC Cl -channels [6] confirms the importance of studying anion binding and transfer processes. As a result, studies in the field of anionic receptors rapidly developed in the DOI: 10.1134/S1070428009090012 past decade [7][8][9][10][11][12][13][14]. Coordination chemistry of anions has become a specific part of coordination chemistry as a whole.…”

Section: Introductionmentioning

confidence: 99%