Premium
Metal Complexation by Tripodal N ‐Acyl(thio)urea and Picolin(thio)amide Compounds: Synthesis/Extraction and Potentiometric Studies
Author(s) -
ReinosoGarcía Marta M.,
Dijkman Arjan,
Verboom Willem,
Reinhoudt David N.,
Malinowska Elżbieta,
Wojciechowska Dorota,
Pietrzak Mariusz,
Selucky Pavel
Publication year - 2005
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200500002
Subject(s) - chemistry , thio , ionophore , amide , potentiometric titration , urea , derivative (finance) , selectivity , medicinal chemistry , extraction (chemistry) , metal , metal ions in aqueous solution , inorganic chemistry , organic chemistry , ion , calcium , catalysis , financial economics , economics
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 Am 3+ and Eu 3+ the compounds are not efficient. However, N ‐acylurea derivative 10 exhibit a significant selectivity for Am 3+ over Eu 3+ . Upon addition of the synergistic hexabrominated bis(dicarbollide)cobalt anion (Br 6 ‐COSAN) the distribution coefficients for Am 3+ and Eu 3+ increase up to 1000 for picolinamide derivative 11 . Extraction studies with metal picrates (Pb 2+ , Cu 2+ , Ag + , Hg 2+ , Cd 2+ , Eu 3+ , Fe 3+ , K + , Na + , and Ca 2+ ) or the incorporation in ion selective electrodes (ISEs), show that picolinamide derivative 11 is a very selective and strong ionophore for Hg 2+ and that N ‐acylthiourea 8 is a very good ionophore for Ag + . (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom