On the determination of empirical absolute chiral structure: Chiroptical spectrum correlations for D<sub>3</sub> lanthanide (III) complexes

Article Article scientifique Article On the determination of empirical absolute chiral structure: Chiroptical spectrum correlations for D<sub>3</sub> lanthanide (III) complexes eng 2006 author Gawryszewska P. author Legendziewicz J. author Ciunik Z. author Esfandiari N. author Muller Gabriela 955632 author Piguet Claude 0000-0001-7064-8548 22415 author Cantuel Martine 529894 author Riehl J.P. 406-412 10.1002/chir.20270 0899-0042 http://doi.wiley.com/10.1002/chir.20270 Circularly polarized luminescence (CPL) from selected transitions of Eu(III) in resolved single crystals of Na3[Eu(ODA)3]·2NaClO4·6H2O are compared to CPL results obtained from solutions containing perturbed racemic mixtures of Eu(2,6‐pyridine‐dicarboxylate)33− and enantiomerically pure d‐f helicate ΛΛ‐(−)EuCr(L8)3] in order to determine an empirical relationship between helicity and CPL spectra. Comparison of the CPL results, even for the magnetic dipole allowed transitions of Eu(III) where one measures large chiral discrimination, shows that the signs and magnitudes do not correlate with the overall helicity of the Eu(III) site. It is concluded that the symmetry of the Eu(III) site in ΛΛ‐(−)EuCr(L8)3 is not close enough to D3 to allow for the confirmation of the presumed spectra:structure correlation. Chirality, 2006. © 2006 Wiley‐Liss, Inc. Circularly polarized luminescence Lanthanide Luminescence Polarization Dewey 540 40 Département de chimie minérale, analytique et appliquée 145 false Chirality 18 6 bede7a33-d5c3-4ada-b1c2-495249d5d238 Article (Published version) Restricted OnTheDetermination_CP_2006.pdf 149918 application/pdf restrictedAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée

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On the determination of empirical absolute chiral structure: Chiroptical spectrum correlations for D₃ lanthanide (III) complexes	Chirality			2006	412	0

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Muller, Gabriela