Catalyst composition and use therefor

摘要

A catalyst composition suitable for use in a process for the preparation of polyketones comprising a group VIII metal complex of a phosphonite of formula (I) R<1>R<2>M<1)<OPR2<3>)2 (I) where R<1> and R<2> are independently a halide or a hydrocarbyl. R<3> is an optionally substituted hydrocarbyl M<1> is boron, aluminium or gallium. Preferred compositions are ÄF2B(OPPh2)2PdClÜ2 and ÄF2B(OPPh2)2 Pd(NCPh)2Ü<+>ÄBF4<->Ü .