Synthesis
All manipulations are carried out under a nitrogen atmosphere using standard Schlenk techniques. Rh2Cl2(1,5-cyclooctadiene)2 (400 mg, 1.63 mmol) is dissolved in 50 mL of degassed acetone to which Silver(I) Tetrafluoroborate (337 mg, 1.73 mmol) is added to precipitate AgCl. The mixture is stirred for 1 h and filtered. The filtrate is added to an acetone solution of dppp (1,3-Bis(diphenylphosphino)propane) (1.58 g, 3.84 mmol). The acetone is partially evaporated under vacuum leaving a precipitate of orange-yellow flakes of [Rh(dppp)2]BF4 (Bis[1,3-bis(diphenylphosphino)propane]rhodium Tetrafluoroborate) in high yield.
References
1. Doughty, D. H.; Anderson, M. P.; Casalnuovo, A. L.; McGuiggan, M. F.; Tso, C. C.; Wang, H. H.; Pignolet, L. H. Adv. Chem. Ser. 1982, 196, 65.
2. Doughty, D. H.; Pignolet, L. H. JACS 1978, 100, 7083.
3. Doughty, D. H.; McGuiggan, M. F., Wang, H. H.; Pignolet, L. H.; Fundam. Res. Homogeneous Catal. 1979, 3, 909.
4. Preparation adapted from Slack, D. A.; Baird, M. C. JOM 1977, 142, C69.
