SEARCH Articles Figures Tables Complex planar Complex square-planar nickel hydride Nickel complex trigonal planar Nickel complexes planar isomers Nickel complexes planar-octahedral equilibria Nickel complexes planar-tetrahedral equilibria Nickel complexes square-planar structures Nickel complexes square-planar-tetrahedral equilibrium Nickel macrocyclic complexes square-planar species Nickel square-planar complexes Nickel-macrocycle complex square planar Square-planar nickel macrocyclic complexes Square-planar nickel macrocyclic complexes properties Square-planar nickel macrocyclic complexes synthesis Square-planar nickel macrocyclic complexes, reactions