Collect. Czech. Chem. Commun. 1992, 57, 74-84

Nickel(II) Complexes with 1,3,6,9,11,14-Hexaazatricyclo-(12,2,1,1)octadecane. Structure and Some Properties

František Březinaa, Martina Šubčíkováa, Jiří Kameníčeka, Jan Lasovskýa, Zdeněk Šindelářa, Richard Pastoreka and Jan Ondráčekb

a Department of Inorganic and Physical Chemistry, Palacký University, 771 47 Olomouc
b Department of Solid State Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


The following compounds have been prepared: [NiL]Cl2.3 H2O, [NiL]Br2.3 H2O, [NiL]I2.H2O and [NiL](NO3)2.H2O, where L is the title macroligand. The structure of [NiL]I2.H2O was solved by direct methods with the results: a = 8.399(3), b = 14.501(2), c = 15.699(2) Å, α = 86.64(1)°, β = 87.46(3)°, γ = 89.01(2)°. The substance crystallizes in the triclinic system with space group P I, Z = 4, R = 0.0589, wR = 0.0626. The arrangement around the nickel atom is approximatively square planar. Cyclic voltammetry demonstrated the possibility of oxidizing the nickel (II) complex and the diamagnetic sulphate [NiL](SO4)2 was prepared by the reaction of [NiL]Cl2.3 H2O with Na2S2O8.