Diastereoselective synthesis of coordination compounds: a chiral tripodal ligand based on bipyridine units and its ruthenium(II) and iron(II) complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Christine HamannHelen Stoeckli-Evans

Abstract

The enantiomerically pure chiral tris-chelating ligand (+)-(7S,10R)-L(L) comprising three 4,5-pinenobipyridine subunits connected through a mesityl spacer has been synthesized. Complexes of L with RuII and FeII have been prepared and characterised. NMR spectroscopy indicates that only one diastereoisomer is formed, and the CD spectra show that the complexes have the [capital Lambda] configuration on the metal centre. The X-ray crystal structure of the iron complex shows that in the octahedral complex, the ligand L coils around the metal and confirms the absolute configuration. The RuII and FeII compounds were also characterised by mass spectrometry, electronic absorption, and, in the case of Ru(II), fluorescence spectroscopy. The photostability of the ruthenium compound was checked by photochemical experiments.

Citations

Jun 2, 2005·Chemical Communications : Chem Comm·Gebhard HaberhauerFrank Rominger
Mar 27, 2009·Chemical Society Reviews·Jeanne Crassous
Apr 24, 2009·Journal of the American Chemical Society·Alexander I Prikhod'ko, Jean-Pierre Sauvage
May 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Tao WuXiao-Zeng You
Jan 11, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Barbara VenturaOliver S Wenger
Oct 14, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Gabriel St-PierreEli Zysman-Colman
Mar 30, 2018·The Journal of Organic Chemistry·Nianqiang JiangJiaobing Wang

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