C31H24CI2CUN4O5, monoclinic, P\2\ln\ (no. 14), a = 15.380(3) A, b = 11.466(2) A, c = 17.150(3) A, β = 109.99(3)°, V = 2842.2 A 3 , Ζ = 4, R#(F) = 0.066, yvRniF 1 ) = 0.197, T= 295 K. Source of material A mixture of CuCh · 2H 2 0 (0.0524 g, 0.31 mmol), 3,5-dihydroxybenzoic acid (0.0917 g, 0.60 mmol), 1,10-phenanthroline (0.1214 g, 0.61 mmol) and water (10 ml) was heated at 393 Κ for 24 h in a 20 ml Teflon-lined stainless-steel autoclave. After cooling, a green solution was obtained. The

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... ained. The resulting solution was put aside and the solvent allowed to evaporate at room temperature. After one week, green plate-shaped crystals of the title compound were obtained. Experimental details The aromatic Η atoms, caiboxyl Η atom, and hydroxyl Η atoms were generated geometrically, and were included in the refinements in the riding model approximation (d(C-H) = 0.93 A, d(0-H)=0.82 A, ί/iso = 1 2 U e q(O)). The water Η atoms were located from Fourier difference maps and were refined with Ο-Η distance restraint of 0.85( 1) A and isotropic displacement parameter ί/iso fixed to 0.05 A 2 .