Acetamide complexes of samarium chloride and bromide

Abstract

The synthesis and data of a study on new complexes of samarium chloride and bromide with acetamide, [Sm(AA)4(H2O)4]Cl3 (I) and [Sm(AA)4(H2O)4]Br3 (II), by IR spectroscopy and X-ray diffraction analysis are presented. It was found that coordination of four molecules of acetamide and four molecules of water in the internal sphere occurs through the oxygen atoms. The coordination polyhedra are complex, between tetragonal antiprism and dodecahedron. These compounds contain one molecule of water. The chloride and bromide ions are not coordinated and exist in the external sphere.

Keywords

• complexes, structure, acetamide, samarium, chloride, bromide.