Dicopper(II) Complexes of the Antitumor Analogues Acylbis(salicylaldehyde hydrazones) and Crystal Structures of Monomeric [Cu2(1,3-propanedioyl bis(salicylaldehyde hydrazone))(H2O)2]·(ClO4)2·3H2O and Polymeric [{Cu2(1,6-hexanedioyl bis(salicylaldehyde hydrazone))(C2H5OH)2}m]·(ClO4)2m·m(C2H5OH)

摘要: Salicylaldehyde hydrazones derived from acyldicarboxylic acids (H4Ln, where n = 0, 1, 2, 4, 6, 8, 10, 14 and is the number of methylene units) varying chain length have been prepared, their dicopper(II) complexes isolated as bis analogues antitumor carboxylate hydrazones. The predominant structural form adopted polymeric, with [{Cu2Ln}m] formed in neutral or basic solution, [{Cu2(H2Ln)Cl2}m] dilute HCl, [{Cu2(H2Ln)}m]·(ClO4)2m HClO4. crystal structures [Cu2(H2L1)(H2O)2]·(ClO4)2·3H2O [{Cu2(H2L4)(C2H5OH)2}m]·(ClO4)2m·m(C2H5OH) determined. structure [Cu2(H2L1)(H2O)2]· (ClO4)2·3H2O consists discrete di-Cu(II) molecules nonsymmetry-related Cu(II) centers. copper atoms are square-planar H2L1 supplying two tridentate, monoanionic ONO domains water completing coordination sphere. metal-binding inclined at 80° to each other. For symmetry-related ...