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The diastereoisomeric forms of a mononuclear Ru(II) complex bearing a bis-phenanthroline Tröger’s base |
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| Authors: | Carole Bresson Martine Demeunynck Frédéric Pierard |
| Institution: | a Service de Chimie Organique et Photochimie, Université Libre de Bruxelles, CP160/08, 50, Avenue F.D. Roosevelt, 1050 Brussels, Belgium b High Resolution NMR Laboratory, Université Libre de Bruxelles, CP160/08, 50, Avenue F.D. Roosevelt, 1050 Brussels, Belgium c LEDSS, UMR5616 & ICMG-FR2607, Université Joseph Fourier, BP53, 38041 Grenoble Cédex 9, France |
| Abstract: | The synthesis of a novel completely asymmetric mononuclear complex of ruthenium(II) bearing a chiral bis-phenanthroline Tröger’s base ligand 1 (TBphen2) is reported. The diastereoisomeric forms of Ru(phen)2TBphen2]2+ (ΔS/ΛR=rac-2a and ΛS/ΔR=rac-2b) were separated through crystallization. A complete structure elucidation of the diastereoisomers in solution, including chirality assignment, was achieved by 1D and 2D NMR techniques. Photophysical characterization revealed no significant differences in the emission properties of rac-2a and rac-2b that closely resemble those of Ru(phen)3]2+. |
| Keywords: | Trö ger&rsquo s base ligand Monometallic ruthenium complex Diastereoisomers NOE experiments |
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