| abstract |
@ A family of polymer bound organometallic complexes comprises compounds derived from a metal and a functionalised organic polymer of formulawherein X is a polymer backbone bonded to a ligand in which; Y is a group derived from an atom selected from C, Si, N and P; R<sub>1</sub>, R<sub>2</sub>, R<sub>3</sub> and R<sub>4</sub> are, independently, groups selected from H, a C<sub>1</sub>-C<sub>4</sub> alkyl group and a halogen atom; R<sub>5</sub> and R<sub>6</sub> are, independently, groups selected from H, a C<sub>1</sub>-C<sub>4</sub> alkyl group and a halogen atom, or together with the nitrogen atom from a heterocyclic ring having 5 or 6 atoms; R<sub>7</sub> and R<sub>8</sub> are, independently, groups selected from H, a C<sub>1</sub>-C<sub>4</sub> alkyl group, an aryl group and a halogen atom and each of n and m have a value from 0 to 10. When the metal is either molybdenum or vanadium the complexes are suitable catalysts for the epoxidation of olefins. |