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Cabort, Amel
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Cabort, Amel
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Ligand dehydrogenation in ruthenium trinitrogen complexes: synthesis, structure and chirality of the cations [Ru(LH4)(L)]2+ [LH4 = 2,6-bis(pyrrolidin-2-yl)pyridine]
2002, Cabort, Amel, Therrien, Bruno, Stoeckli-Evans, Helen, Bernauer, Klaus, Süss-Fink, Georg
Reaction of 2,6-bis(pyrrolidin-2-yl)pyridine (LH4) with RuCl3·3H2O in refluxing MeOH/H2O mixts. gives the octahedral complexes [Ru(LH4)(L)]2+, in which one of the two trihapto ligands was dehydrogenated as 2,6-bis(3,4-dihydro-2H-pyrrol-5-yl)pyridine (L), even if LH4 was present in excess. With the three stereoisomers of LH4, [Ru(R,S-LH4)(L)]2+ (meso), [Ru(R,R-LH4)(L)]2+ and [Ru(S,S-LH4)(L)]2+ were isolated as the perchlorate salts and characterized by x-ray structure anal. and by CD spectra. [on SciFinder(R)]