| 摘要 |
The preparation of organic delta - and pi -complexes of transition metals of the formula Me(A)n(L-C)(L)m is described. Me is a transition metal, L is selected from alkyl or aryl-phosphines, -arsines, and -stibines, L-C is selected from the same, in which one C-H bond has reacted with the central metal Me, and A is an olefin selected from linear olefins having a carbon atom number from 2 to 5 or cyclic olefins having a carbon atom number from 6 to 8. The reaction is carried out starting with the hydride complex of the formula MeHxLn1, in which x varies from 5 to 7 and n can be 2 or 3. The complexes thus obtained show an increased reactivity towards the olefins, compounds with mobile hydrogen and towards hydrogen itself. They are used as catalysts in numerous reactions such as hydrogenations, carbonylations and oxidations. |
