Hamann, Christine Zelewsky, Alexander von Neels, Antonia Stoeckli-Evans, Helen 2003-12-05 The enantiomerically pure chiral tris-chelating ligand (+)-(7<i>S</i>,10<i>R</i>)-<strong>L</strong>(<strong>L</strong>) comprising three 4,5-pinenobipyridine subunits connected through a mesityl spacer has been synthesized. Complexes of <strong>L</strong> with Ru<small>^II</small> and Fe<small>^II</small> have been prepared and characterised. NMR spectroscopy indicates that only one diastereoisomer is formed, and the CD spectra show that the complexes have the Λ configuration on the metal centre. The X-ray crystal structure of the iron complex shows that in the octahedral complex, the ligand <strong>L</strong> coils around the metal and confirms the absolute configuration. The Ru<small>^II</small> and Fe<small>^II</small> compounds were also characterised by mass spectrometry, electronic absorption, and, in the case of Ru(<small>II</small>), fluorescence spectroscopy. The photostability of the ruthenium compound was checked by photochemical experiments. application/pdf https://folia.unifr.ch/global/documents/299723 https://folia.unifr.ch/documents/299723/files/1_zelewski_dsc.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1039/b311693j info:eu-repo/semantics/openAccess License undefined Dalton Transactions. - 2004, vol. 3, p. 402-406 info:eu-repo/classification/udc/54 Diastereoselective synthesis of coordination compounds: a chiral tripodal ligand based on bipyridine units and its ruthenium(II) and iron(II) complexes http://purl.org/coar/resource_type/c_6501