[1] Univ Chile, Fac Ciencias Quim & Farmaceut, Dept Quim Inorgan & Analit, Casilla 233, Santiago, Chile
[2] Univ Santiago Chile, Fac Quim & Biol, Dept Quim Aplicada, Santiago, Chile
[3] Univ Rennes 1, CNRS, UMR6509, Lab Chim Coordinat & Catalyse, F-35042 Rennes, France
[4] Cent Univ Venezuela, Fac Ciencias, Escuela Quim, Caracas, Venezuela