[NiCl2(N-allyl-N'-pyrimidin-2-ylthiourea-N)2(water)2]

bis(acetato)(3-(2-(2-hydroxybenzylidene)hydrazinyl)-3-oxo-n(thiazole-2-yl)propanamide)nickel(II) monohydrate

hexaminenickel(II) sulfate