Bis[3-(anthracen-9-yl)pentane-2,4-dionato-κ 2 O , O ']( N , N -di-methyl-formamide-κ O )[tris-(pyrazol-1-yl-κ N 2 )hydroborato]europium(III).

The title compound, [Eu(C 9 H 10 BN 6 )(C 19 H 15 O 2 ) 2 (C 3 H 7 NO)] or [TpEu(Anthracac) 2 (DMF)], was synthesized by reaction of a tris-(pyrazol-yl)borate (Tp - ) Eu 3+ complex with 3-(anthracen-9-yl)pentane-2,4-dione (HAnthracac) in the presence of tri-ethyl-amine. In the title compound, Eu 3+ is located in an octa-vertex square-pyramidal coordination environment. In the two Anthracac - ligands, the anthracene and nearly planar acetyl-acetonate fragments are almost orthogonal. Neighboring mol-ecules of TpEu(Anthracac) 2 (DMF) are connected in the crystal by inter-molecular van der Waals inter-actions, while π-stacking inter-actions are limited to the edges of two anthracene rings.