A new family of [CuIILnIIIMV] heterotrimetallic complexes (Ln = La, Gd, Tb; M = Mo, W): model systems to probe exchange interactions and single-molecule magnet properties
Résumé
Four isostructural trinuclear 3d–4f–4(5)d heterotrimetallic complexes, with the general formula [L2CuLn(H2O)5(μ-NC)M(CN)7], were obtained from the association of binuclear 3d–4f complexes and {MV(CN)8}3− metalloligands (M = Mo, Ln = La 1; M = W, Ln = La 2; M = Mo, Ln = Gd 3; M = Mo; Ln = Tb 4, where H2L2 = 1,2-ethanediylbis(2-iminomethylene-6-methoxy-phenol)). The metalloligand coordinates through a single-cyanido group at the apical position of the copper(II) ion belonging to the {CuIILnIII} binuclear complex.....