Bis[3-(anthracen-9-yl)pentane-2,4-dionato-κ2 O, O'](N, N-di-methyl-formamide-κ O)[tris-(pyrazol-1-yl-κ N 2)hydroborato]europium(III)

Elena A Mikhalyova; Matthias Zeller; Jerry P Jasinski; Manpreet Kaur; Anthony W Addison

doi:10.1107/S2056989022000676

Bis[3-(anthracen-9-yl)pentane-2,4-dionato-κ² O, O'](N, N-di-methyl-formamide-κ O)[tris-(pyrazol-1-yl-κ N ²)hydroborato]europium(III)

Acta Crystallogr E Crystallogr Commun. 2022 Jan 28;78(Pt 2):103-107. doi: 10.1107/S2056989022000676. eCollection 2022 Jan 1.

Authors

Elena A Mikhalyova¹, Matthias Zeller², Jerry P Jasinski³, Manpreet Kaur³, Anthony W Addison⁴

Affiliations

¹ L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospekt Nauki 31, Kyiv, 03028, Ukraine.
² Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
³ Department of Chemistry, Keene State College, Keene, NH 03435, USA.
⁴ Department of Chemistry, Drexel University, Philadelphia, PA 19104-2816, USA.

Abstract

The title compound, [Eu(C₉H₁₀BN₆)(C₁₉H₁₅O₂)₂(C₃H₇NO)] or [TpEu(Anthracac)₂(DMF)], was synthesized by reaction of a tris-(pyrazol-yl)borate (Tp^-) Eu³⁺ complex with 3-(anthracen-9-yl)pentane-2,4-dione (HAnthracac) in the presence of tri-ethyl-amine. In the title compound, Eu³⁺ 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.

Keywords: antenna ligands; crystal structure; lanthanide complexes; luminescence.

Grants and funding

This work was funded by National Research Foundation of Ukraine grant 2020.02/0202 to EAM; National Academy of Sciences of Ukraine grant 32/20-N and 32/21-N to EAM; National Science Foundation, Directorate for Mathematical and Physical Sciences grant CHE-1039027 to JPJ.