bis(O-ethylxanthato)nickel(II)

Ni(2+)-α,β,γ,δ-tetra(4-methoxyphenyl)porphine

Ni(II) N,N'-bis(salicylidene)-o-phenylenediamine complex

{(N,N'-bis(3-methoxysalicylidene)ethylenediamine)}nickel * H2O