Four copper (Ⅱ) complexes were synthesized at room temperature by oxidative addition reaction of metallic copper powder and dibenzoyl peroxide in the presence of ligands (2,2'-bipy, dppe, 2-aminopyridine and benzoimidazole, respectively). Four copper (Ⅰ) complexes were synthesized by reduction substitution reaciton of copper (Ⅱ) salts with different diphosphine ligands [Ph~2P(CH~2)~nPPh~2, dppm (n=1), dppe (n=2), dppp (n=3) and dppb (n=4)]. The complexes were characterized by elemental analysis and single crystal X-ray analysis. The reaction mechanism was discussed on the basis of electronic spectra. A facile synthetic method of copper (Ⅰ, Ⅱ) complexes was provided.

Key words: REACTION MECHANISM, ELEMENTAL ANALYSIS, MOLECULAR STRUCTURE, SUBSTITUTION REACTION, COPPER COMPLEX, REDUCTION REACTION, DIPHENYLPHOSPHINE, ADDITION REACTION, ELECTRON SPECTROSCOPY, PHOSPHINES