SEARCH Articles Figures Tables Complex planar Complexes macrocycles Macrocycle complexes Macrocyclic complexes Macrocyclic squares Nickel complexes macrocycles Nickel macrocycle Nickel macrocyclic complexes Nickel macrocyclic complexes square-planar species Nickel planar complexes Nickel square-planar complexes Nickel-macrocycle complex Nickel-macrocycle complex square planar Nickel-macrocycle complex square planar Square macrocycle Square planar complexes Square-planar nickel macrocyclic complexes properties Square-planar nickel macrocyclic complexes synthesis Square-planar nickel macrocyclic complexes, reactions