Two new tetranuclear μ4-carbonato copper(II) complexes. Syntheses, crystal structure and magnetic behaviour of [(μ4-CO3)(μ-Br)2 Cu4(bapa)4]Br4 and [(μ4-CO3)(μ-Cl)2 Cu4(bapma)4]Cl4 ·12H2O [bapa = bis(aminopropyl)amine and bapma = bis(aminopropyl)methylamine] | Publicación