Polyhedral oligomeric silsesquioxane (poss) bonded ligands and the use thereof

An organic compound comprising phosphorus covalently bound to at least one polyhedral oligomeric silsesquioxane derivative, wherein the compound has a formula 1

• wherein (R1a,b,c)n-1(SiO1.5)nR2a,b,c are polyhedral oligomeric silsesquioxane derivatives in which n
• is 8, and R1a, R1b, and R1c are identical C4-alkyl chains;
• where k, l, and m are each 0 or 1, with the proviso that k+l+m≧1;
• where R2a, R2b, R2c are each a linkage between the polyhedral oligomeric silsesquioxane derivative and G1, G2 and/or and G3, respectively;
• where R2a, R2b, and R2c are identical C2-alkyl chains;
• and
• where G1, G2 and G3 are phenyl groups monovalently bound to phosphorus perfluoroalkylated, aromatic, heteroaromatic, fused aromatic, fused heteroaromatic units.