Synthesis and Crystal Structure of a μ-Oxido-Bridged Dinuclear Iron(III) Complex Derived From 3, 5-Dichlorosalicylaldehyde and 4-(2-Aminoethyl)morpholine

Abstract

A μ-oxido-bridged dinuclear iron(III) complex, [Fe₂O(L¹)₂(L²)₂], where L¹ and L² are the deprotonated forms of 2,4-dichloro-6-[(2-morpholin-4-ylethylimino)methyl]phenol and 3,5-dichlorosalicylaldehyde, respectively, has been prepared and characterized by elemental analysis, infrared spectrum, and single-crystal X-ray determination. The complex crystallizes in the triclinic space group P, with unit cell dimensions a = 10.670(1) Å, b = 11.585(1) Å, c = 19.748(2) Å, α = 86.766(2)°, β = 85.038(2)°, γ = 73.973(2)°, V = 2336.1(4) ų, Z = 2, GOOF = 1.019, R₁ = 0.0422, and wR₂ = 0.1024. Structural analysis shows that the iron atoms in the complex are hexacoordinate with a normal Fe-O-Fe bridging angle of 150.84(13)°. Each Fe atom is coordinated by the NNO donor atoms of L¹, OO donor atoms of L², and one bridging O atom. The Fe· · ·Fe distance is 3.467(2) Å.

Keywords:

• Schiff base
• dinuclear complex
• iron complex
• crystal structure
• X-ray crystallography