Stepwise Synthesis and Magnetic Control of Trimetallic Magnets [Co₂Ln(L)₂(H₂O)₄][Cr(CN)₆]·nH₂O (Ln = La, Gd; H₂L = 2,6-Di(acetoacetyl)pyridine) with 3-D Pillared-Layer Structure

Integration of mononuclear [Cr(CN)6]3- and preorganized trinuclear [Co2Ln(L)2]3+ complexes provides novel trimetallic magnets having a 3-D pillared-layer framework with an alternate array of 2-D layer extended by Cr(III)-CN-Co(II) linkages and Ln(III) ion. The overall magnetic nature can be systematically controlled by Ln(III) ions inserted between the 2-D ferromagnetic layers.