论文部分内容阅读
The dihydride cluster H_2O_(s_3)(CO)_(10) reacts with ethyne to give a cis-adduct [O_(s_3)H(μ,η~2-CH=CH_2)(CO)_(10)]. The high deuterated cluster D_2O_(s_3)(CO)_(10), the reaction of D_2O_(s_3)(CO)_(10)with ethyne C_2H_2 to form the vinyl product cluster [O_(s_3)D(μ, η~2-CH=CHD)(CO)_(10)], and thereaction of H_2O_(s_3)(CO)_(10) with the deuterated ethyne C_2D_2 to form [O_(s_3)H(μ,η~2-CD=CDH)(CO)_(10)] have been reported primarily in this paper. The two cis-adducts undergo cis-trans-isomerization of μ,η~2-vinyl ligands under a small amount of the nucleophile pyridine. Usingthe combination of deuteration and dynamic ~1H,~2H NMR spectra, we report the experimen-tal evidence determined by the dynamic ~1H, ~2H NMR spectra, mechanism, and kinetic dataof the isomerization.
The dihydride cluster H_2O_ (s_3) (CO) _ (10) reacts with ethyne to give a cis_adduct [O_ (s_3) H (μ, η ~ 2 -CH = CH_2) (CO) _ (s_3) (CO) _ (10), the reaction of D_2O_ (s_3) (CO) _ (10) with ethyne C_2H_2 to form the vinyl product cluster [O_ (s_3) D (CO) _ (10)], and thereaction of H_2O_ (s_3) (CO) _ (10) with the deuterated ethyne C_2D_2 to form [O_ (s_3) H CDH) (CO) _ (10)] have been reported in this paper. The two cis-adducts undergo cis-trans-isomerization of μ, η ~ 2-vinyl ligands under a small amount of the nucleophile pyridine. Using the combination of deuteration and dynamic ~ 1H, ~ 2H NMR spectra, we report the experimen-tal vector determined by the dynamic ~ 1H, ~ 2H NMR spectra, mechanism, and kinetic data of the isomerization.