abstract |
The invention relates to novel bis(perfluoro-n-alkyl sulfonates) of formula (I), wherein n means 3, 4, 5, 6, 7, 8, 9 and A and B have the meanings given in the claims, and to the use thereof for producing diphosphanes of formula (III), wherein A and B have the meanings given above and R<2> and R<3> have the meanings given in the claims. |