Anionic tert-butyl-calix[4]arenes substituted at the narrow and wide rim by cobalt bis(dicarbollide)(1−) ions and CMPO-groups. Effect of stereochemistry and ratios of the functional groups on the platform on the extraction efficiency for Ln(III)/An(III)

Grüner, Bohumı́r; Böhmer, Volker; Dordea, Crenguţa; Selucký, P.; Bubeníková, Mária

doi:10.1016/j.jorganchem.2013.04.035

Cited by 9 publications

(2 citation statements)

References 38 publications

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“… Extraction properties of calixarene 6 2-Comparing extraction efficiency of wide rim substituted 6 2-with those of narrow rim substituted 7 2-and 8 2-, it was observed that the extraction efficiency decreases in the order 7 . 36 This result contradicts the general observation of the higher extraction efficiency of wide rim substituted calixarenes than that of narrow rim substituted calixarenes. 32 The contradiction is probably due to the fact that in 6 2-the CMPO groups B are directly bound to the ipso positions of calixarenes, while in 7 2-and 8 2-they are bound via the flexible butyloxy or ethyloxy chains, respectively (Scheme 1).…”

Section: -mentioning

confidence: 74%

Selected applications of calixarene derivatives

Deska¹,

Dondela²,

Śliwa³

et al. 2015

Arkivoc

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Section: -mentioning

confidence: 74%

Selected applications of calixarene derivatives

Deska¹,

Dondela²,

Śliwa³

et al. 2015

Arkivoc

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“…However, the extraction efficiency was generally so high that it prevented the stripping of metal ions, unless it was performed at high acidity in the presence of strong complexing agents (like DTPA). 125 CCD-functionalised ionic CMPO ligands (Chart 23) showed very high extraction efficiencies from highly acidic solutions. In the extraction of Eu(III) and Am(III), CCDCMPO-7a showed D values (D Eu = 66 at 3 M HNO 3 in nitrophenyl hexyl ether (NPHE)) up to four orders of magnitude higher compared conventional CMPO ligands (D Eu = 0.1 at 3 M HNO 3 in NPHE with OPhD(iBu)CMPO).…”

Section: Chart 12mentioning

confidence: 99%

Ligands for f-element extraction used in the nuclear fuel cycle

2017

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Liquid-liquid extraction is the major technique being applied for the partitioning of f-elements from nuclear waste. In this review, the recent developments in ligand design, optimization and extraction properties are summarised for the main classes of extractants (organophosphorus ligands, diamides and N-heterocycles), with a focus on the separation of actinides and lanthanides. Structural modifications, pre-organisation and different solvent systems, as key factors for the fine-tuning of the extraction properties, are discussed. From this review, it appears that small modifications of the structure of the ligand, the pre-organising platform or the solvent can have significant impact on the extraction (and separation) of metal ions. Interest in the combinations of ligands for the extraction processes is growing, since they provide improvements over individual ligands. Similarly, unconventional approaches are being pursued to develop more efficient and greener processes.

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Calix[4]resorcinarene macrocycles

Eddaif

Trif

Telegdi

et al. 2019

J Therm Anal Calorim

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Supramolecular chemistry is an interdisciplinary scientific field, including chemical, physical and biological properties of more complex chemical species than the molecules themselves. Calixarenes/calixresorcinarenes are macrocyclic compounds, consisting of 'n' phenolic/resorcinolic units linked together by methylene bridges; these macrocycles are often used for molecular recognition. Thus, different modifications can be made to both the lower and upper rim, allowing the construction of well-defined multivalent buildings. In this work, three calix[4]resorcinarene macrocycles were synthesized, namely C-dec-9-en-1-ylcalix[4]resorcinarene (CAL 11U), C-trans-2, cis-6-octa-1,5-dien-1-ylcalix[4]resorcinarene (CAL 9U) and C-nonylcalix[4]resorcinarene (CAL 10) by a simple condensation reaction. The compounds CAL 11U and CAL 10 have been already synthesized by researchers, while the CAL 9U has been synthesized for the first time. Their structures were confirmed using ATR-FTIR, 1 H NMR and 13 C NMR. Thermal analysis combined with mass spectrometric evolved analysis of the vapors was used to study the thermal behavior of the different synthesized molecules, and they were the subject of characterization by X-ray powder diffraction in order to analyze their degree of crystallinity.

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Anionic tert-butyl-calix[4]arenes substituted at the narrow and wide rim by cobalt bis(dicarbollide)(1−) ions and CMPO-groups. Effect of stereochemistry and ratios of the functional groups on the platform on the extraction efficiency for Ln(III)/An(III)

Cited by 9 publications

References 38 publications

Selected applications of calixarene derivatives

Selected applications of calixarene derivatives

Ligands for f-element extraction used in the nuclear fuel cycle

Calix[4]resorcinarene macrocycles

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