| abstract |
A composition comprising a perfluoro-N 2 -phosphinylamidine chromium salt complex having Structure PFAHNPACr I: n nwherein R f1 is a substituted phenyl group comprising alkyl groups at the 2 and 6 positions and at least one fluoro group or perfluoroalkyl group at the 3, 4, and/or 5 positions, R 2 is a C 1 to C 30 organyl group, R 4 and R 5 are each independently a C 1 to C 30 organyl group, and CrX p is a chromium salt where X is a monoanion, and p is an integer from 2 to 6. |