Acta Cryst. (2006). E62, m2383-m2385  [ doi:10.1107/S1600536806034234 ]

(5,16-Dimethyl-2,6,13,17-tetraazatricyclo[14,4,0^1,18,0^7,12]docosane-⁴N)dinitratocopper(II) trihydrate

J.-H. Choi, T. Suzuki and S. Kaizaki

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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