The structure of iron(III) complexes with carbamide derivatives

Abstract

Infrared spectra of new iron(III) complexes with urea derivatives: [Fe (CH 3HNCONH 2) 6]X 3; [Fe(C 2H 5HNCONH 2) 6]X 3 and [Fe(CH 3-HNCONHCH 3) 6]X 3 (where X = Cl −, NO − 3 or 1 2 SO 2− 4) have been recorded and their interpretation given. The analysis of the infrared spectra was based on a comparison of the positions of bands corresponding to the vibrations of characteristic groups appearing in the complexes and the free ligands. Comparison and analysis of the data show that the urea derivatives coordinate with mono- and disubstituted iron(III) through the oxygen atom of the carbonyl group.