TY - JOUR
T1 - CMP(O) tripodands: synthesis, potentiometric studies and extractions
AU - Reinoso garcia, M.M.
AU - Janczewski, D.J.
AU - Reinhoudt, David
AU - Verboom, Willem
AU - Malinowska, Elzbieta
AU - Pietrzak, Mariusz
AU - Hill, Clement
AU - Baca, Jiri
AU - Gruner, Bohumir
AU - Selucky, Pavel
AU - Gruttner, Cordula
PY - 2006
Y1 - 2006
N2 - 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 (logML = 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.
AB - 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 (logML = 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.
KW - METIS-236512
KW - IR-60353
U2 - 10.1039/b600412a
DO - 10.1039/b600412a
M3 - Article
VL - 30
SP - 1480
EP - 1492
JO - New journal of chemistry
JF - New journal of chemistry
SN - 1144-0546
IS - 10
ER -