Macrocyclic dinickel(II) complexes derived from 2,6-diformyl-4-methyl-thiophenolate and C2 linking diamine(diaminomalleonitrile ethylenediamine) are prepared and characterized. In these complexes, both metal centers in the N2S2 sites are in square-planar configuration and are diamagnetic. The low-spin states of the nickel(II) ions are preserved in polar solvents.
