First Observation of a Self-Assembled Two-Layer Trinuclear Schiff Base Complex of D-F Metal Ions Connected with μ-Imine Nitrogen and μ-Formyl Oxygen Atoms

Abstract

The synthesis and structural characterization of a trinuclear Schiff base complex with a Cu₂Dy (Dy = dysprosium) core is reported for the first time. The crystal data for [C₄₂H₄₀N₆O₁₂Cl₃,Cu₂Dy]·6H₂O (2) are as follows: orthorhombic, space group Pbcn (#60), Z = 4, a = 12.476(5) Å, b = 26.522(5) Å, c = 15.028(5) Å, V = 4973(1) ų, F(000) = 2608, Dc = 1.748 gcm⁻³, μ(Mo-Kα) = 3.37 mm⁻¹, T = 296 K and 2130 reflections were observed with [I>2[sgrave](I)]. The refinement converged with R = 0.089, Rw = 0.086 and S = 1.40. The coordinate polyhedron of the central metal Dy(III) and Cu(II) atoms is an eight-coordinated trigonal-dodecahedrone and a five-coordinated square-pyramid, respectively.