TY - JOUR
T1 - Metal complexation by tripodal N-Acyl(thio)urea and picolin(thio)amide compounds: synthesis/extraction and potentiometric studies
AU - Reinoso garcia, M.M.
AU - Dijkman, Arjan
AU - Verboom, Willem
AU - Reinhoudt, David
AU - Malinowska, Elzbieta
AU - Wojciechowska, Dorota
AU - Pietrzak, Mariusz
AU - Selucky, Pavel
PY - 2005
Y1 - 2005
N2 - The synthesis and binding properties towards different cations of a series of tripodal ligands functionalized with N-acyl(thio)urea and picolin(thio)amide moieties are described. For the extraction of Am3+ and Eu3+ the compounds are not efficient. However, N-acylurea derivative 10 exhibit a significant selectivity for Am3+ over Eu3+. Upon addition of the synergistic hexabrominated bis(dicarbollide)cobalt anion (Br6-COSAN) the distribution coefficients for Am3+ and Eu3+ increase up to 1000 for picolinamide derivative 11. Extraction studies with metal picrates (Pb2+, Cu2+, Ag+, Hg2+, Cd2+, Eu3+, Fe3+, K+, Na+, and Ca2+) or the incorporation in ion selective electrodes (ISEs), show that picolinamide derivative 11 is a very selective and strong ionophore for Hg2+ and that N-acylthiourea 8 is a very good ionophore for Ag+.
AB - The synthesis and binding properties towards different cations of a series of tripodal ligands functionalized with N-acyl(thio)urea and picolin(thio)amide moieties are described. For the extraction of Am3+ and Eu3+ the compounds are not efficient. However, N-acylurea derivative 10 exhibit a significant selectivity for Am3+ over Eu3+. Upon addition of the synergistic hexabrominated bis(dicarbollide)cobalt anion (Br6-COSAN) the distribution coefficients for Am3+ and Eu3+ increase up to 1000 for picolinamide derivative 11. Extraction studies with metal picrates (Pb2+, Cu2+, Ag+, Hg2+, Cd2+, Eu3+, Fe3+, K+, Na+, and Ca2+) or the incorporation in ion selective electrodes (ISEs), show that picolinamide derivative 11 is a very selective and strong ionophore for Hg2+ and that N-acylthiourea 8 is a very good ionophore for Ag+.
KW - METIS-225079
KW - IR-52996
U2 - 10.1002/ejoc.200500002
DO - 10.1002/ejoc.200500002
M3 - Article
SN - 1434-193X
VL - 2005
SP - 2131
EP - 2138
JO - European journal of organic chemistry
JF - European journal of organic chemistry
IS - 10
ER -