Abstract
Iron halide complexes of the type FeCl2•2L (L = CH3CONH2, HCONH2, HCONHCH3) and FeCl3•L (L = (C6H5)3P, (C6H5)3As, C6H5NH2, C6H5CONH2) have been prepared by the reaction of iron carbonyls with various ligands in chloroform as solvent. The mechanism of the reaction and the effect of other solvents have also been studied. The magnetic susceptibility measurements and infrared spectral study (4000–200 cm−1) suggest that these complexes have tetrahedral configuration. The possible site of bonding in ligands and infrared assignments for Fe—O, Fe—Cl, Fe—N, Fe—P, Fe—As bands have been given. The relative Fe—O bond strengths in various amide complexes have been determined on the basis of metal–oxygen stretching frequency and of shifts in carbonyl stretching frequency.
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