Polynuclear 3d complexes based on potentially tetra-anionic heptadentate ligands including amido, amino and phenoxo donors: Synthesis, crystal structure and magnetic properties
methoxo ligands, dinuclear manganese and tetranuclear copper complexes, respectively. 1 includes two well isolated MnIII ions (Mn⋯Mn′ = 7.33 A) that do not interact magnetically. The intermolecular Mn⋯Mn″ distance along the 1D chains (10.17 A) is also too large to allow extended magnetic interactions. The pairwise magnetic interactions between the copper(II) ions in the tetranuclear complex 2 are so