Cooperative Anion Recognition in Copper(II) and Zinc(II) Complexes with a Ditopic Tripodal Ligand Containing a Urea Group
作者:Israel Carreira-Barral、Teresa Rodríguez-Blas、Carlos Platas-Iglesias、Andrés de Blas、David Esteban-Gómez
DOI:10.1021/ic402855r
日期:2014.3.3
that anions such as NO3– and PhCO2– form 1:2 complexes (metal/anion) where one of the anions coordinates to the metal center and the second one is involved in hydrogen-bonding interaction with the urea group, which is projected away from the metal ion. Spectrophotometric titrations performed for the CuII complex indicate that this system is able to bind a wide range of anions with an affinity sequence: