Catalyst compositions, based upon a Group VIII metal and a phosphorus bidentate ligand of the general formula R¹R²P-R⁵-PR³R⁴ in which R¹ to R⁴ represent identical or different optionally polar substituted hydrocarbyl groups and R⁵ is a divalent bridging group of which the bridge connecting the two phosphorus atoms consists of three carbon atoms, the central carbon atom of the bridge carrying an alkyl group and a hydroxyl group as substituents.
催化剂组合物,基于第八族
金属和通式为 R¹R²P-R⁵-PR³R⁴ 的
磷双叉
配体,其中 R¹ 至 R⁴ 代表相同或不同的任选极性取代的烃基,R⁵ 是二价桥基,其中连接两个
磷原子的桥由三个碳原子组成,桥的中心碳原子带有一个烷基和一个羟基作为取代基。