Synthesis, structures, and antibacterial activities of two iron(III) complexes with Schiff bases

Abstract

Two Schiff base iron(III) complexes, [FeL1(AHA)] · H2O (I) and [Fe(L2)2] · ClO4 (II), where AHA is the deprotonated form of acetohydroxamic acid, and L1 and L2 are the anionic form of N,N′-bis(3-ethoxysalicylidene)propane-1,2-diamine and 2-[1-(2-aminopropylimino)ethyl]phenol, respectively, have been synthesized and characterized by physical chemical methods and single crystal X-ray diffraction. Crystallographic data for I: orthorhombic, space group Iba2, a = 20.781(3), b = 23.527(3), c = 10.071(2) A, V = 4923.7(12) A3, Z = 8, R1 = 0.0374, wR2 = 0.0900. Crystallographic data for II: triclinic, space group a = 12.748(1), b = 13.401(1), c = 19.007(1) A, α = 106.623(2)°, β = 97.462(2)°, γ = 112.543(2)°, V = 2784.9(4) A3, Z = 4, R1 = 0.0892, wR2 = 0.2434. X-ray crystal structural study indicated that the coordination environment around each Fe atom in the complexes is a six-coordinated distorted octahedron. The antibacterial activities of the complexes were assayed.