Di- and tetra-nuclear mixed-valence complexes of rhodium(III,I) and rhodium(III)–iridium(I) with the 2,2′-bi-imidazolate(2–) anion (bim) as bridging ligand. Crystal structure of [(η-C5Me5)[P(OEt)3]Rh(bim)Rh(nbd)2][ClO4]2 | Publicación