Ancillary Ligand Functionalization of Cyanide-Bridged S = 6 Fe^III₄Ni^II₄ Complexes for Molecule-Based Electronics

Treatment of 1-chloro-6-iodohexane or 1-chloro-10-iododecane with lithium tris(pyrazolyl)methanide, followed by potassium thioacetate, affords bifunctional 1-S(acetyl)-tris(pyrazolyl)alkanes (L) (pz)₃C(CH₂)_nSAc (n = 6, 1; 10, 2). Magnetic studies of {[(pzTp)Fe^III(CN)₃]₄[Ni^IIL]₄[OTf]₄}·solvent (4, L = 1; 5, L = 2) boxes suggest that −(CH₂)₆ chains (4) limit intermolecular interactions while −(CH₂)₁₀ chains in 5 introduce crystallographic disorder and a distribution of relaxation times; 4 and 5 exhibit slow relaxation of the magnetization.