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MACROCYCLIC DIPHOSPHA-CROWN ETHERS: SYNTHESIS AND ALKALI METAL PICRATE EXTRACTION STUDIES


HANNIOUI A. 1 *, EL MALKI A. 1, RAKIB E. M. 1, KNOUZI N. 2, BERRADA M. 2, EL MALOULI M. B. 3
(1)UNIVERSITÉ CADI AYYAD, FST BÉNI-MELLAL, B.P.523 BÉNI-MELLAL, MAROC. (2)UNIVERSITÉ HASSAN II, FACULTÉ DES SCIENCES SIDI OTHMANE, BP6023, CASABLANCA, MAROC. (3)UNIVERSITÉ HASSAN II FACULTÉ DES SCIENCES AIN CHOCK, MAÂRIF, B.P.5366, CASABLANCA, MAROC. *E-M

Issue:

SCSCC6, Volume V, No. 1

Section:

Volume V (2004)

Abstract:

A series of cyclic phospha-crown ethers was synthesized through a cyclisation reaction. These compounds were shown to extract alkali metals, ammonium, strontium and calcium ions from the aqueous phase to the organic one. The selectivity in partitioning varied with the relative fit of the ionic radius of the metal ion with the whole size of the macrocycle. For a typical phospa-crown-metal ion combination, the formation of a 1:1 complex was suggested by UV spectroscopy investigation.

Keywords:

extraction, transport, ionophores, alkali picrates, phosphacrown ethers, bathochromic.

Code [ID]:

CSCC6200405V01S01A0002 [0001023]

DOI:

Full paper:

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