Bioinorganic Chemistry and Applications

Research Article

Synthesis, Characterization, Antioxidant, and Antibacterial Studies of Some Metal(II) Complexes of Tetradentate Schiff Base Ligand: (4E)-4-[(2-(E)-[1-(2,4-Dihydroxyphenyl)ethylidene]aminoethyl)imino]pentan-2-one

Table 1

Physical characterization, analytical data, and molar conductance of the Schiff base ligand H₂LL and its complexes.


Compounds	Empirical formula	M. Wt (g)	Color	Yield (%)	% found (Calcd)			Decomposition Temp, °C	Conductance (µScm⁻¹)
Compounds	Empirical formula	M. Wt (g)	Color	Yield (%)	C	H	N	Decomposition Temp, °C	Conductance (µScm⁻¹)

H₂LL	C₁₅H₁₉N₂O₃	275.32	Golden yellow	61.23	65.26 (65.44)	7.13 (6.96)	9.98 (10.17)	235	—
Cu(LL)·2H₂O	C₁₅H₂₁N₂O₅Cu	372.89	Dark-purple	77.27	48.55 (48.32)	5.43 (5.68)	7.23 (7.51)	229	3.91
Ni(LL)·2H₂O	C₁₅H₂₁N₂O₅Ni	368.03	Reddish-brown	76.20	49.11 (48.95)	5.52 (5.75)	7.44 (7.61)	191	4.47
Co(LL)·3H₂O	C₁₅H₂₃N₂O₆Co	368.29	Darkish-brown	69.30	46.81 (46.64)	6.19 (6.00)	7.50 (7.25)	232	3.57
Zn(LL)·H₂O	C₁₅H₁₉N₂O₄Zn	356.71	Lemon yellow	65.28	50.23 (50.51)	5.08 (5.37)	8.03 (7.85)	227	3.22