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

0050857 - ÚACH 2007 RIV GB eng J - Journal Article
Reinoso-García, M.M. - Janczewski, D. - Reinhoudt, D.N. - Verboom, W. - Malinowska, E. - Pietrzak, M. - Hill, C. - Báča, Jiří - Grüner, Bohumír - Selucký, P. - Grűttner, C.
CMP(O) tripodands: synthesis, potentiometric studies and extractions.
[CMPO tripodální ligandy,potenciometrické studium a extrakční vlastnosti.]
New Journal of Chemistry. Roč. 30, č. 10 (2006), s. 1480-1492. ISSN 1144-0546. E-ISSN 1369-9261
Grant - others:EEC(PL) FIKW-CT-2000-00088; EEC(PL) F16W-CT-2003-508854
Institutional research plan: CEZ:AV0Z40320502
Keywords : assisted chemical-separation * complex-formation constants * solvent-extraction
Subject RIV: CA - Inorganic Chemistry
Impact factor: 2.647, year: 2006

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 beta(ML) = 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.

Potenciometrické studium a extrakční vlastnosti CMPO) tripodálních lígandů.
Permanent Link: http://hdl.handle.net/11104/0140897