Acta Crystallographica Section E

Structure Reports Online

Volume 59, Part 1 (January 2003)

metal-organic compounds

Acta Cryst. (2003). E59, m29-m32 [ doi:10.1107/S1600536802023036 ]

Anhydrous tris(dibenzoylmethanido)(o-phenanthroline)europium(III), [Eu(DBM)₃(Phen)]

M. O. Ahmed, J.-L. Liao, X. Chen, S.-A. Chen and J. H. Kaldis

Abstract: The hydrated tris(dibenzoylmethanido)(o-phenanthroline)europium(III) complex, [Eu(DBM)₃(Phen)]·xH₂O, is converted efficiently into anhydrous tris(dibenzoylmethanido)(o-phenanthroline)europium(III), [Eu(DBM)₃(Phen)] or [Eu(C₁₅H₁₁O₂)₃(C₁₂H₈N₂)], by heating under vacuum. The title compound has been characterized by FT-IR, ¹H and ¹³C NMR spectroscopy, and X-ray diffraction methods. It crystallizes in the triclinic space group P $\overline 1$ with five molecules in the asymmetric unit, without any pseudosymmetry. The trivalent europium ion is eight-coordinate, and the coordination polyhedron can best be described as a slightly distorted square antiprism.