ChemInform Abstract: Tailor Made Coordination Compounds for Photochemical Purposes.

Abstract

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Chiral Bis(oxazoline) Ruthenium Complexes with Bipyridyl‐Type N‐Heteroaromatics: Comparative Stereochemical and Photochemical Characterization of their Λ‐ and Δ‐Diastereomeric Geminate Isomers

“…As for the enantiomeric Λ‐isomers and Δ‐isomers of [Ru(bpy) 3 ] 2+ , it is well‐known that photoirradiation of one separated enantiomer brings about its racemization to give a mixture of two Λ‐ and Δ‐enantiomers,9 but similar (Λ,Δ)‐racemization for the present geminate diastereomers of i Pr‐biox ruthenium compounds was not observed (vide infra). It is noted that practical introduction of appropriate intermolecular bridges5e, 8, 10 on the bipyridyl‐type N ‐heteroaromatic chelates in separated mononuclear ruthenium compounds would assemble these chiral building blocks to afford stereochemically well‐defined polynuclear architectures, the ruthenium center of which is arranged in a single configuration mode.…”