Chemical Structure from Scientific Research

The enantiomerization of L BB2 RuCp(NCMe) + is degenerate in the presence of an achiral counterion. In the presence of chiral anions, the ion-pair interactions break the degeneracy and bias the equilibrium towards one stereoisomer of the BBmetal complex, that is, K not equal to 1. Note: only the two lowest-energy stereoisomers are shown for clarity. Reagents and conditions: (i) L BB2 RuCp(NCMe)PF 6 , BuN 4 TRISPHAT, CDCl 3 , r.t. (ii) L BB2 RuCp(NCMe)PF 6 , Na( S )-BORBIN, CDCl 3 , r.t.

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