High-valent paramagnetic ruthenium(IV) complexes containing multianionic chelating ligands as efficient catalysts for alkene epoxidation; X-ray crystal structure of 2[Ru^IV(chbae)(PPh₃)(py)]·Et₂O·2H₂O [H₄chbae = 1,2-bis(3,5-dichloro-2-hydroxybenzamido)ethane; py = pyridine]

Abstract

The reaction of 1,2-bis(3,5-dichloro-2-hydroxybenzamido)ethane (H₄chbae) with Ru(PPh₃)₃Cl₂ yielded [Ru^IV(chbae)(PPh₃)₂] which in turn gave [Ru^IV(chbae)(PPh₃)(py)](py = pyridine) upon treatment with pyridine; the [Ru^IV(chbae)(PPh₃)(py)] complex has been characterized by magnetic susceptibility measurement (µ_eff.= 3.08 µ_B) and X-ray crystallography and found to catalyse the epoxidation of alkenes in the presence of iodosylbenzene.

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High-valent paramagnetic ruthenium(IV) complexes containing multianionic chelating ligands as efficient catalysts for alkene epoxidation; X-ray crystal structure of 2[RuIV(chbae)(PPh3)(py)]·Et2O·2H2O [H4chbae = 1,2-bis(3,5-dichloro-2-hydroxybenzamido)ethane; py = pyridine]

Abstract

Keywords

High-valent paramagnetic ruthenium(IV) complexes containing multianionic chelating ligands as efficient catalysts for alkene epoxidation; X-ray crystal structure of 2[Ru^IV(chbae)(PPh₃)(py)]·Et₂O·2H₂O [H₄chbae = 1,2-bis(3,5-dichloro-2-hydroxybenzamido)ethane; py = pyridine]