Reactions of iron carbonyls with various ligands in the presence of chloroform. A new method for the preparation of iron halide complexes

15 May 1968

journal article
Published by Canadian Science Publishing in Canadian Journal of Chemistry

Vol. 46 (10) , 1773-1779
https://doi.org/10.1139/v68-293

Abstract

Iron halide complexes of the type FeCl_2•2L (L = CH₃CONH₂, HCONH₂, HCONHCH₃) and FeCl_3•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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