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An air and moisture stable ruthenium(Ⅲ) formate complex[Ru(HCO_2)Cl_2]_n has been synthesized and examined in the epoxidation of substituted styrenes.X-ray crystallographic data of this complex were determined and showed that the formate ligand coordinates to the ruthenium centers in a μ~2-η~2 fashion(syn,syn).Its asymmetric unit contains one Ru(Ⅲ) ion together with the half of a formate ligand and one chloride anion,which are bridged between the metal centers,forming a 1-D chain coordination polymer.This electron deficient helical coordination polymer was employed in the epoxidation of parafluorostyrene,affording the epoxide product in 92%yield.Natural chirality of this coordination polymer is applicable in asymmetric epoxidation reactions.
An air and moisture stable ruthenium (Ⅲ) formate complex [Ru (HCO_2) Cl_2] _n has been synthesized and examined in the epoxidation of substituted styrenes. X-ray crystallographic data of this complex were determined and showed that the formate ligand coordinates to the ruthenium centers in a μ ~ 2-η ~ 2 fashion (syn, syn) .Its asymmetric unit contains one formate ligand and one chloride anion, which are bridged between the metal centers, forming a 1-D chain coordination polymer. This electron deficient helical coordination polymer was employed in the epoxidation of parafluorostyrene, affording the epoxide product in 92% yield. Natural chirality of this coordination polymer is applicable in asymmetric epoxidation reactions.