β-meso-(5,7,7,12,12,14-Hexamethyl-1,4,8,11-tetraazacyclotetradecane)nickel(II) Diperchlorate Monohydrate

In the title compound, [Ni(C₁₆H₃₆N₄)](ClO₄)₂.H₂O, the Ni^II ion is four-coordinated by the four N atoms of the macrocyclic ligand. The four N atoms are coplanar to within 0.05 Å and the four H atoms attached to the N atoms are located on the same side of the macrocyclic plane. The configuration of the four chiral nitrogen centres and two chiral carbon centres are (1RS, 4SR, 8RS, 11SR) and (5SR, 14RS) respectively. The two five membered chelate rings are in an unstable eclipsed form and the two six-membered chelate rings are in a stable chair form. The two methyl groups attached to the asymmetric C atoms are equatorial. The perchlorate ions and water O atom are not within the bonding distance of the cation.

-1