Synthesis and structural analysis of a exo-ditopic macrocyclic ligand bearing 2,2′-bipyridine units interconnected by silane spacers and of its binuclear ruthenium complex

Abstract

The synthesis and structural analysis of a macrocyclic exo-ditopic ligand bearing two 2,2′-bipyridine units interconnected at the 4 and 4′ positions by two –(CH₂)₂Si(CH₂)₂– spacers and of its acyclic analogue is achieved; for both compounds ruthenium homobinuclear complexes were prepared; for the complex obtained with the cyclic ligand, both diastereoisomers were separated and the structure of the meso form was elucidated by X-ray analysis.