Preparation of hexacoordinating benzimidazole containing ligand and hexakis(benzimidazole-ruthenium(II)) complex. Molecular structure of C6{CH2-(N-benzimidazole-RuCl2(p-cymene))}6.

Franc Pozgan (1) , Loïc Toupet (2) , Pierre H. Dixneuf (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 IPR - Institut de Physique de Rennes

A hexabenzimidazole ligand was synthesised and used to prepare a hexakis{benzimidazole-ruthenium(II)} complex containing six RuCl(2)(arene) units of which the X-ray structure analysis shows a helical arrangement with alternating up and down benzymidazole-ruthenium(II) branches attached to a central benzene ring. The reactivity of the prepared complex with phosphite and carbonate was investigated and revealed the weakness of (benzimidazole)N-Ru bonds and the release of the polydentate ligand.

Domaines: Catalyse

Franc Pozgan, Loïc Toupet, Pierre H. Dixneuf. Preparation of hexacoordinating benzimidazole containing ligand and hexakis(benzimidazole-ruthenium(II)) complex. Molecular structure of C6{CH2-(N-benzimidazole-RuCl2(p-cymene))}6.. Dalton Transactions, 2011, 40 (25), pp.6619-22. ⟨10.1039/c1dt10316d⟩. ⟨hal-00631754⟩