%0 Journal Article %T [4,4′-(Ethane-1,2-diyldinitrilo)bis(pent-2-en-2-olato)]copper(II) 0.25-hydrate %A Muhammad Aslam %A Itrat Anis %A Nighat Afza %A Ajaz Hussain %J Acta Crystallographica Section E %D 2012 %I International Union of Crystallography %R 10.1107/s1600536812017102 %X In the title compound, [Cu(C12H18N2O2)]¡¤0.25H2O, the coordination of the O,N,N¡ä,O¡ä-tetradentate ligand results in a cis-CuN2O2 square-planar geometry for the metal ion and the presence of two six-membered and one five-membered chelate rings. The complete complex molecule is close to planar (r.m.s. deviation = 0.047 ). The uncoordinated water molecule (O-atom site symmetry 2) was modelled as half occupied. In the crystal, C¡ªH...Ow and Ow¡ªH...O (w = water) hydrogen bonds link the components into layers parallel to ab plane. %U http://scripts.iucr.org/cgi-bin/paper?S1600536812017102