Synthesis, crystal structure and magnetic properties of an oxalate-bridged diiron(III) complex {[FeIII(salapn)]2(C2O4)}

The oxalate-bridged Schiff-based complex {[FeIII(salapn)]2(C2O4)} (1) has been synthesized and characterized structurally (salapn = N,N′-bis(salicylaldehyde)-1,3-diaminopentane dianion). Each iron(III) ion is coordinated in slightly distorted octahedral geometry by two oxygen atoms and two nitrogen atoms from a salapn ligand, and two carboxylate oxygen atoms from an oxalate ligand. The [Fe(salapn)] moiety is linked by a bridging oxalate ligand to form a dimeric entity. The magnetic susceptibility study of 1 demonstrates the presence of antiferromagnetic interaction between two Fe(III) ions.