| Identification | Back Directory | [Name]
Bis[1,3-bis(diphenylphosphino)propane]rhodium Tetrafluoroborate | [CAS]
70196-21-3 | [Synonyms]
Bis[1,3-bis(diphenylphosphino)propane]rhodium Tetrafluoroborate | [Molecular Formula]
C54H56BF4P4Rh | [MDL Number]
MFCD16876621 | [MOL File]
70196-21-3.mol | [Molecular Weight]
1018.65 |
| Questions And Answer | Back Directory | [Purification]
The product Bis[1,3-bis(diphenylphosphino)propane]rhodium Tetrafluoroborate is recrystallized from a solvent mixture of CH2Cl2 and Et2O by a standard layering technique. The orange-yellow flakes of [Rh(dppp)2]BF4 are dissolved in a minimum amount of CH2Cl2 in a Schlenk tube equipped with a rubber septum. A volume of Et2O (ca. 3 times the CH2Cl2 volume) is carefully layered on top with use of a syringe or cannular tube. The solvents are allowed to slowly diffuse, and large red crystals are isolated. The red crystals are washed with Et2O and dried under vacuum.
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| Hazard Information | Back Directory | [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.
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