Phospholane-phosphite ligands for alkene hydroformylation catalysts

A phospholane-phosphite ligand having the general formula I:

• wherein:
• R1 and R2 are independently selected from H, or substituted and unsubstituted, aryl, alkyl, aryloxy or cycloalkyl groups containing from 1 to 40 carbon atoms;
• R3, R4 and R5 are independently selected from H, F, Cl, Br, or substituted and unsubstituted, aryl, alkyl, alkoxy, trialkylsilyl, triarylsilyl, aryldialkylsilyl, diarylalkylsilyl and cycloalkyl groups containing from 1 to 20 carbon atoms, wherein the silicon atom of the alkylsilyl is in the alpha position of the substituent;
• and
• R6 and R7 are independently selected from H, F, Cl, Br, alkyl groups containing from 1 to 10 carbon atoms, halogenated alkyl groups, or aryl groups containing from 1 to 20 carbon atoms.