Jump to main content
Jump to site search

Issue 10, 2006
Previous Article Next Article

CMP(O) tripodands: synthesis, potentiometric studies and extractions

Author affiliations

Abstract

Ligand systems containing three carbamoylmethylphosphonate (CMP) or -phosphine oxide (CMPO) moieties attached to a tripodal platform have been synthesized for metal complexation and subsequent extraction from HNO3 solutions. The incorporation into ion selective electrodes (ISE) and picrate extractions with Na+, K+, Ag+, Ca2+, Cd2+, Hg2+, Pb2+, Cu2+, Eu3+ and Fe3+ shows that CMPO tripodand 3 is very selective for Eu3+ and forms a very stable complex (log βML = 28.3). Liquid–liquid extractions performed with Eu3+ and Am3+ show reasonable extraction properties of the CMP(O) tripodands 3, 11 and 13 in 1,1,2,2-tetrachloroethane, while in 1-octanol for all tripodands studied the distribution coefficients are low. Upon addition of the synergistic agent hexabrominated cobalt bis(dicarbollide) anion (bromo-COSAN) the distribution coefficients for Am3+ and Eu3+ extraction increase considerably for CMP(O) tripodands 3 and 4. Covalently linked COSAN only enhances the extraction of Am3+ and Eu3+ at 0.001–0.01 M HNO3. The functionalization of dendrimer coated magnetic silica particles with CMP(O) tripodands led to very effective particles (31 and 32) for Am3+ and Eu3+ removal from 0.01 M HNO3 solutions.

Graphical abstract: CMP(O) tripodands: synthesis, potentiometric studies and extractions

Back to tab navigation

Publication details

The article was received on 11 Jan 2006, accepted on 23 Feb 2006 and first published on 21 Mar 2006


Article type: Paper
DOI: 10.1039/B600412A
New J. Chem., 2006,30, 1480-1492

  •   Request permissions

    CMP(O) tripodands: synthesis, potentiometric studies and extractions

    M. M. Reinoso-García, D. Jańczewski, D. N. Reinhoudt, W. Verboom, E. Malinowska, M. Pietrzak, C. Hill, J. Báča, B. Grüner, P. Selucky and C. Grüttner, New J. Chem., 2006, 30, 1480
    DOI: 10.1039/B600412A

Search articles by author

Spotlight

Advertisements