889063-19-8Relevant academic research and scientific papers
Metal-controlled assembly and selectivity of a urea-based anion receptor
Amendola, Valeria,Boiocchi, Massimo,Colasson, Benoit,Fabbrizzi, Luigi
, p. 6138 - 6147 (2006)
1-(3-[1,10]phenanthrolin-2-yl-phenyl)-3-(4-trifluoromethyl-phenyl)-urea (1) forms a solution-stable 1:2 complex with copper(I), [CuI(1) 2]+, which behaves as an anion receptor in aprotic media. The [CuI(1)2]+ receptor may adopt a geometrical arrangement in which the two facing urea subunits give tetrafurcate H-bond interaction with a spherical anion (halides and H2PO4 -). In the presence of the Y-shaped acetate, the [Cu I(1)2]+ receptor rearranges to interact with two CH3COO- ions, according to two stepwise equilibria. Thus, in the presence of substoichiometric amounts of the anions, [Cu I(1)2]+ discriminates H2PO 4- over CH3COO-, inverting the basicity trend.
