Synthesis, crystal structures and competitive binding property of a family of functionalized calix[4]arene ionophores

Ramakrishna, Vallu; Patra, Subrata; Suresh, Eringathodi; Bhatt, Anjani K.; Bhatt, Pragnya A.; Hussain, Amjad; Paul, Parimal

doi:10.1016/j.inoche.2012.05.028

Cited by 5 publications

(4 citation statements)

References 44 publications

(72 reference statements)

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“…In our earlier reported calix-crown-6 systems [42], the best selectivity ratio obtained for K + /Na + is 1.08. In the present work, the selectivity ratios for K + /Na + obtained are in the range 3.30 -4.89, which suggest that the performance of the present systems are much better than the earlier systems.…”

Section: Comparative Studymentioning

confidence: 70%

“…To develop such a system, three important factors to be considered, high selectivity towards K + in presence of mixture of metal ions, it must form strong complex with K + and the system must work in aqueous media. To the best of our knowledge, there is no report in the literature, except one from us [42],…”

Section: Comparative Studymentioning

confidence: 92%

“…Selected portion of the ES-MS spectrum of the K + complex of 3 is shown in Fig. 4 and that of the ionophores 1, 2 and 4 are submitted as ESI (Figs S15-17 [42]. Molecular structure of the K + -complex of 1, [1+K] + pic -, has been established by single crystal X-ray study and described below.…”

Section: Isolated K + Complexes Of the Ionophores 1-4mentioning

confidence: 99%

“…One of the important applications of these calix-crown hybrid ionophores is to use them as sensor/complexing reagent for alkali and alkaline earth metal ions [38][39][40][41][42][43]. If good selectivity for a particular metal ion is found, these ionophores can be used for recovery/extraction of that specific metal ion.…”

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confidence: 99%

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Synthesis, crystal structures and competitive binding property of a family of calix[4]arene-biscrown-5/6 and their application in extraction of alkali metal ions from sea bittern

et al. 2015

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Section: Comparative Studymentioning

confidence: 70%

Section: Comparative Studymentioning

confidence: 92%

Section: Isolated K + Complexes Of the Ionophores 1-4mentioning

confidence: 99%

mentioning

confidence: 99%

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Synthesis, crystal structures and competitive binding property of a family of calix[4]arene-biscrown-5/6 and their application in extraction of alkali metal ions from sea bittern

et al. 2015

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Host-guest complexes of calix[4]tubes - prediction of ion selectivity by quantum chemical calculations VI

2014

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The selectivity of the bis(calix[4]arene)tetraethylene abbreviated as calix[4]tube for the endohedral complexation of alkali and alkaline earth metal ions, was predicted on the basis of structures and complex formation energies computed with three different quantum chemical methods: DFT LANL2DZp)/LANL2DZp), PM3/SPASS, and PM6. A comparison with published X-ray structures demonstrated that the most reliable results were achieved applying DFT calculations. The complexation of K⁺ and Ba²⁺ is most favorable, followed by the encapsulation of Rb⁺ and Sr²⁺, respectively. The flexibility of the tube, described by the torsion angles associated with the ethylene linkages between the calix[4]arene units and phenyl rings intersecting the plane of the four methylene carbon atoms, also makes an important contribution to its selectivity. In general, the cavity size is similar to [2.2.2] and [N2N2N2], the cryptands with the largest cavities previously studied in our group applying a similar protocol.

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Recent advances in polymeric nanostructured ion selective membranes for biomedical applications

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Synthesis, crystal structures and competitive binding property of a family of functionalized calix[4]arene ionophores

Cited by 5 publications

References 44 publications

Synthesis, crystal structures and competitive binding property of a family of calix[4]arene-biscrown-5/6 and their application in extraction of alkali metal ions from sea bittern

Synthesis, crystal structures and competitive binding property of a family of calix[4]arene-biscrown-5/6 and their application in extraction of alkali metal ions from sea bittern

Host-guest complexes of calix[4]tubes - prediction of ion selectivity by quantum chemical calculations VI

Recent advances in polymeric nanostructured ion selective membranes for biomedical applications

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