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Condensation of ferrocenoylacetone with arylamine or benzylamine in toluene at reflux afforded a series of N,O-bidentate ferrocenoyl enaminone ligands, Fc–C(O)CH = C(CH 3 )N(H)R 1  (H L1 : R 1  = C 6 H 5 ; H L2 : R 1  = 4-I-C 6 H 4 ; H L3 : R 1  = 4-Cl-C 6 H 4 ; H L4 : R 1  = 4-Me-C 6 H 4 ; H L5 : R 1  = 4-OMe-C 6 H 4 ; H L6 : R 1  = 2-Me-C 6 H 4 ; H L7 : R 1  = 2-OMe-C 6 H 4 ; H L8 : R 1  = 2-F-C 6 H 4 ; H L9 : R1= CH 2 C 6 H 5 ; Fc = ferrocenyl). Reaction of Cu(CH 3 COO) 2  with two equivalents of H L1 , H L3 , and H L5 -H L8  in the presence of CH 3 ONa in ethanol gave six copper complexes, [Cu( L1 ) 2 ] ( 1 ), [Cu( L3 ) 2 ] ( 2 ), [Cu( L5 ) 2 ] ( 3 ), [Cu( L6 ) 2 ] ( 4 ), [Cu( L7 ) 2 ] ( 5 ) and [Cu( L8 ) 2 ] ( 6 ), respectively. All compounds were characterized by  1 H NMR, FT-IR, and UV–vis spectroscopies along with their electrochemical properties. The molecular structures of H L1 -H L3 , H L5 , H L6 , and H L8 , together with the copper complexes  2 .0.6C 2 H 5 OH and  3 .CH 3 OH have been established by single-crystal X-ray diffraction.

Syntheses, crystal structures, and electrochemistry of a series of ferrocene-containing ketoimines