Diastereoselective formation of luminescent dinuclear lanthanide(iii) helicates with enantiomerically pure tartaric acid derived bis(β-diketonate) ligands

M Albrecht, S Schmid, S Dehn, C Wickleder, S Zhang, AP Bassett, Zoe Pikramenou, R Fröhlich

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

The chiral tartaric acid derived bis(β-diketonate) ligands 13-H2 diastereoselectively form dinuclear triple-stranded helicates with a series of lanthanide(III) ions (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb), which bind water molecules as additional co-ligands. In the cases of europium(III) and terbium(III) ions, bright red or green luminescence is observed, respectively. Hereby the energy transfer from the ligand to the metal is most effective with the bromophenyl-substituted ligand 3-H2. Reaction of 3-H2 with europium(III) in a 4 : 2 ratio results in a highly luminescent quadruple-stranded dinuclear complex [34Eu2]2–.
Original languageEnglish
Pages (from-to)1755-1762
Number of pages8
JournalNew Journal of Chemistry
Volume31
Issue number10
Early online date22 Jun 2007
DOIs
Publication statusPublished - 2007

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