Copper(II) and Nickel(II) Complexes with 3,14-Dimethyl-2,6,13,17-tetraazatricyclo[16.4.0.07,12]docosane, [M(C20H40N4)]Cl2.2H2O (M = CuII and NiII)

Abstract

The structures of (3,14-Dimethyl-2,6,13,17- tetraazatricyclo[16.4.0.07,12]docosane-N,N′,N′′,N′′′)copper(II) dichloride dihydrate, [Cu(C20H40N4)]Cl2.2H2O, and (3,14-Dimethyl-2,6,13,17- tetraazatricyclo[16.4.0.07,12]docosane-N,N′,N′′,N′′′)nickel(II) dichloride dihydrate, [Ni(C20H40N4)]Cl2.2H2O, are presented. Both complexes have an MN4 square plane involving the four N atoms of the docosane ligand. In the copper complex, water molecules occupy the two axial positions, though the Cu⋯O distances are longer than normal coordination ranges. In the nickel complex, the water molecules is displaced too far from the coordination sphere to be considered bonded to the Ni atom.