15751-00-5 15772-06-2 1H-Imidazole nickel(II) chloride compound (6:1) EINECS 239-841-5 Hexakis(1H-imidazole-N3)nickel(2+) dichloride Nickel(2+), hexakis(1H-imidazole-kappaN3)-, dichloride, (OC-6-11)- Nickel(2++), hexakis(1H-imidazole-N3)-, dichloride, (OC-6-11)-