Chirality transfer via resolved bridging ligands

1 Polynuclear Complexes with Chiralized Pyridine and Polypyridine Ligands 

Cleavage of the resolved dimer by chloride abstraction provides a mononuclear complex where the configuration at the metal is preserved. Such compounds, with either A or A configuration, can be used as building blocks for further stereoselective coordination synthesis. 

Synthesis of the dinuclear rhodium complexes with thienylpyridine and with the related pinene version. 

The authors suggest that the stereoselectivity is complete for the central iridium atom since it acquires a A-configuration in both isomers of the tetranuclear Ir-HEXOL type complex. However, mixed configurations were obtained for the 

Eight possible stereoisomers of the tetranuclear Ir-HEXOL-type complexes (reference ). 

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