Novel homogeneous trihydrocarbyl silyl-substituted alkyl diaryl phosphine transition metal complexes of the general formula: [(Ar.sub.2 PQ).sub.y SiR.sub.4-y ].sub.g (MX.sub.n).sub.s wherein Ar is a C.sub.6 to C.sub.10 aromatic hydrocarbyl radical, Q is a C.sub.1 to C.sub.30 saturated straight chain divalent radical either unsubstituted or substituted, R is an unsubstituted C.sub.1 to C.sub.10 hydrocarbyl, C.sub.1 to C.sub.10 monosubstituted hydrocarbyl, phenyl radical, y is 1 to 4, g times y is 1 to 6, M is a transition metal selected from the group consisting of Group VIII transition metals, X is an anion or organic ligand excluding halogen satisfying the coordination sites of the metal, n is 2 to 6 and s is 1 to 3, are disclosed. These materials are superior catalysts for the selective hydroformylation of olefins, particularly in the presence of excess quantities of the ligand of the formula: [(Ar.sub.2 P)[Q].sub.y SiR.sub.4-y ] wherein Ar, Q, R, and y are as previously defined.
本发明涉及一种新型均相三氢碳基取代烷基二芳基膦过渡
金属配合物,其通式为:[(Ar.sub.2 PQ).sub.y SiR.sub.4-y ].sub.g (MX.sub.n).sub.s,其中Ar为C.sub.6到C.sub.10
芳香烃基,Q为C.sub.1到C.sub.30饱和直链二价基团,可以是未取代或取代的,R为未取代的C.sub.1到C.sub.10烃基,C.sub.1到C.sub.10单取代烃基,苯基,y为1到4,g乘y为1到6,M为从第VIII族过渡
金属中选择的过渡
金属,X为阴离子或有机
配体,不包括卤素,满足
金属的配位位点,n为2到6,s为1到3。这些材料是优良的催化剂,特别是在
配体[(Ar.sub.2 P)[Q].sub.y SiR.sub.4-y ]存在过量的情况下,对烯烃的选择性羰化反应有较高的催化活性。其中,Ar、Q、R和y的定义如上所述。