Chlorobis(2,2,2-trichloroethoxy)-and dichloro(2,2,2-trichloroethoxy)-iron(III): Synthesis,characterization, and coordination chemistry

Chlorobis(2,2,2-trichloroethoxy)- and dichloro(2,2,2-trichloroethoxy)iron(III) have been synthesized. They react with various oxygen and nitrogen donor ligands to yield adducts formulated as FeCl(OCH₂CCl₃)₂ · 2 L or FeCl₂(OCH₂CCl₃) · 2 L (L = ligand). The depressed magnetic moments of these compounds show the presence of strong antiferromagnetic interactions between iron atoms. The infrared and ¹H nmr spectra establish the presence of bridging and terminal alkoxy groups and ligands (L) are cis to each other. The electronic spectra of these complexes indicate that each iron atom is approximately octahedrally coordinated. Mass spectral data are in favour of dimeric structure for the title compounds.