1. CNRS, Laboratoire de Chimie de Coordination, LCC, UPR 8241, 205 Route de Narbonne, BP 44099, F-31077 Toulouse, Cedex 4, France
2. Université de Toulouse, Université Paul Sabatier, UPS, 118 Route de Narbonne, F-31062 Toulouse, Cedex 9, France
3. Laboratory of Bioinorganic, Department of Organic and Inorganic Chemistry Federal University of Ceará, Fortaleza, Ceará 60455-760, Brazil