Synthesis, reactivity and some physical properties of new copper(II) complexes containing {2-(o-hydroxyphenyl) }benzoxazole moieties

Synthetic Inorganic and Metallo-organic Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad-211 002, Uttar Pradesh, India E-mail : rajalkoxy@yahoo.com Department of Chemistry, R. J. College, Ghatkopar, Mumbai-400 086, India Department of Chemistry, DDU Gorakhpur University, Gorakhpur-273 001, Uttar Pradesh, India Manuscript received 14 July 2010, accepted 31 March 2011 A complex [(J.L-CI)2Cu2{ŋ2-(pbox)hl (1) has been isolated by the reaction of copper(II) chloride (hydrated) with {2-(o-hydroxyphenyl)}benzoxazole (pboxH) in equimolar ratio [in ethanolic medium] and was found to be insoluble in most of the organic solvents; resulting product was treated with sodium salts of various Schiff bases, isopropoxide and aluminium tetraisopropoxide in presence of THF/pyridine produced the complexes of the type [(smab)Cu{ŋ2-(pbox)] (2), [(sap)Cu{ŋ2-(pbox)}] (3) and [(opr1)2Cu2{ŋ2-(pbox)2 (4), [{AI(opr1)4}Cu{ŋ2-(pbox)}2 (5). These products have been characterized by elemental analysis (C, H, N), Volhard's method (for Cl) and AAS (for Cu), melting points, spectroscopic (IR, UV-Visible, ESR, FAB-MS) and magnetic studies