Concepedia

A Coordinatively Unsaturated Species with an Agostic C−H Interaction, [(κ<sup>4</sup>-Tp<sup>iPr</sup>)Ru(dppe)]OSO<sub>2</sub>CF<sub>3</sub>, and Its Addition Reaction

Yoshiaki Takahashi, Shiro Hikichi, Munetaka Akita, Yoshihiko Moro‐oka

Organometallics · 1999 · 40 citations · 3 references

DOI

Concepts

Abstract

The substitution reaction of the cationic aquo−ruthenium complex [Tp iPr Ru(dppe)(OH 2 )]OTf ( 1 ), giving [Tp iPr Ru(dppe)(L)]OTf ( 3 ), proceeds by way of the dehydrated intermediate [(κ 4 -Tp iPr )Ru(dppe)]OTf ( 2 ), which has an agostic interaction with a methyl C−H bond in the isopropyl substituent of the Tp iPr ligand, as revealed by X-ray crystallography and NMR analysis. Complex 2 is reactive enough to incorporate a N 2 molecule to give the dinitrogen complex [Tp iPr Ru(dppe)(N 2 )]OTf ( 3b ).

References

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Synthesis and Structure Determination of Rh−diene Complexes with the Hydridotris(3,5-diisopropylpyrazolyl)borate Ligand, Tp<sup>iPr</sup>Rh(diene) (diene = cod, nbd):  Dependence of the ν(B−H) Values on the Hapticity of the Tp<sup>iPr</sup>Ligand (κ<sup>2</sup>vs κ<sup>3</sup>)<sup>1</sup>

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