Design of One-Dimensional Coordination Networks from a Macrocyclic {3d-4f} Single-Molecule Magnet Precursor Linked by [W(CN)8]3− Anions

The outcome of 1:1 reactions of the tetranuclear 3d-4f Single Molecule Magnet (SMM) [Cu3Tb(LPr)(NO3)2(H2O)]NO3 (1) with (TBA)3[W(CN)8] (TBA = tri-nbutyl ammonium cation, [(n-Bu)3N−H]+) in dimethylformamide (DMF) is dependent on the crystallization method employed: liquid−liquid diffusion of the reagents together gives {[Cu3Tb(LPr)W(CN)8(DMF)4]*(DMF)}n (2) whereas diethyl ether vapor diffusion into the reaction solution gives {[Cu3Tb(LPr)W(CN)8(DMF)3(H2O)3]*(DMF)1.5*(H2O)0.5}n (3). Both compounds are obtained as black single crystals and feature one-dimensional (1D) coordination networks (chains) of [1]3+ macrocycles linked by [W(CN)8]3− anions. The two assemblies differ from a structural point of view...

3d-3d-4f Chain Complexes Constructed Using the Dinuclear Metallacyclic Complex [Ni2(mbpb)3]2- [H2mbpb -1,3-Bis(pyridine-2-carboxamide)benzene] as a Ligand: Synthesis, Structures, and Magnetic Properties

A series of one-dimensional Ni2Ln cationic complexes have been prepared by assembling the in situ generated dinuclear mesocate [Ni2(mbpb)3]2- building block [H2mbpb is the ligand 1,3-bis(pyridine-2-carboxamide)benzene] with Ln3þ metal ions (Ln3þ = Gd, Tb, Dy). The crystal-field potentials for the two types of site symmetries found for these 3d-3d-4f complexes (LnO7 and LnO8) are quite different, which has a direct influence on the depopulation of the Stark sublevels, the magnetic anisotropy, and the magnetic properties