| JUREČKA, Petr, Pavel VOJTÍŠEK, Karel NOVOTNÝ, Jan ROHOVEC and Ivan LUKEŠ. Synthesis, characterisation and extraction behaviour of calix[4]arene-based phosponic acids. Journal of the chemical society. Perkin transactions II, Physical organic chemistry. London: Chemical society, 2002, vol. 2002, No 7, p. 1370-1377. ISSN 1472-779X. |
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@article{405001,
author = {Jurečka, Petr and Vojtíšek, Pavel and Novotný, Karel and Rohovec, Jan and Lukeš, Ivan},
article_location = {London},
article_number = {7},
keywords = {synthesis; extraction agent; calix[4]arene},
language = {eng},
issn = {1472-779X},
journal = {Journal of the chemical society. Perkin transactions II, Physical organic chemistry},
title = {Synthesis, characterisation and extraction behaviour of calix[4]arene-based phosponic acids},
url = {http://www.rsc.org/CFmuscat/intermediate_abstract.cfm?FURL=/ej/P2/2002/b105489a.PDF},
volume = {2002},
year = {2002}
}
TY - JOUR
ID - 405001
AU - Jurečka, Petr - Vojtíšek, Pavel - Novotný, Karel - Rohovec, Jan - Lukeš, Ivan
PY - 2002
TI - Synthesis, characterisation and extraction behaviour of calix[4]arene-based phosponic acids
JF - Journal of the chemical society. Perkin transactions II, Physical organic chemistry
VL - 2002
IS - 7
SP - 1370
EP - 1370
PB - Chemical society
SN - 1472779X
KW - synthesis
KW - extraction agent
KW - calix[4]arene
UR - http://www.rsc.org/CFmuscat/intermediate_abstract.cfm?FURL=/ej/P2/2002/b105489a.PDF
N2 - Three new bis(phosponic) acids were prepared by derivatization of p-tert-butylcalix[4]arene on the lower rim by -(CH2)x-PO3H2 groups and were fully characterized by NMR spectroscopy; some of them were further investigated by X-ray analysis. The compounds obtained were tested as extractants for La3+, Eu3+, Yb3+ and Th4+ in 0.1 - 1 M HNO3. Structural details of the complex HLn(H2L1)2 where Ln = Y, La, Eu were elucidated by NMR techniques in solution. The extraction efficiencies decrease with increasing length of the CH2 spacer; the dependence is not monotonic, and an extraordinary selectivity was observed for Yb. The extraction efficiency of Ln3+ for all of the ligands studied increased significantly with decreasing ionic radius.
ER -
JUREČKA, Petr, Pavel VOJTÍŠEK, Karel NOVOTNÝ, Jan ROHOVEC and Ivan LUKEŠ. Synthesis, characterisation and extraction behaviour of calix[4]arene-based phosponic acids. \textit{Journal of the chemical society. Perkin transactions II, Physical organic chemistry}. London: Chemical society, 2002, vol.~2002, No~7, p.~1370-1377. ISSN~1472-779X.
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