Synthesis and characterization of non-symmetric tetradentate complexes of Zn(II), Co(II), and Cu(II)

The non-symmetrical tetradentate Schiff-base H2L was obtained using the half-unit N-(1-hydroxy-2- acetophenone)-1-amino-2-phenyleneimine (HL) with 2-hydroxyl-1-naphthaldehyde. ZnL, CoL, and CuL complexes were prepared and characterized by 1H-NMR, IR, electronic, and atomic absorption spectra. The single crystal X-ray structure of CuL was determined. Crystal data for CuL are triclinic space group P-1, a = 8.3933 (17) ˚A, b = 11.197 (2) ˚A, c = 13.381 (3) ˚A, α = 95.29 (3) ◦ , β = 94.37 (3) ◦ , γ = 95.82 (3) ◦, and z = 2.