Acta Cryst. (2006). E62, m2383-m2385 [ doi:10.1107/S1600536806034234 ]
Abstract: In the title compound, [Cu(NO3)2(C20H40N4)]·3H2O, the Cu atom lies on a crystallographic inversion centre and has a distorted octahedral geometry, with four N atoms of the macrocyclic ligand in the equatorial positions and two O atoms of the axial nitrate ligands. The long axial Cu-O bond of 2.746 (2) Å may result from the Jahn-Teller effect. The macrocyclic ligand adopts the most stable trans-III configuration with the two six-membered rings in chair form and two five-membered rings in a gauche form.
Online 31 August 2006
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