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Tetraphenyldiphosphine

Tetraphenyldiphosphine is the organophosphorus compound with the formula [PPh2]2, where Ph = phenyl (C6H5). It is a white, air-sensitive solid that dissolves in nonpolar solvents. It is a centrosymmetric molecule with a P-P bond of 2.2592 Å.[1]

Tetraphenyldiphosphine is produced by reductive coupling of chlorodiphenylphosphine:

2 Ph2PCl + 2 Na → Ph2P-PPh2 + 2 NaCl

The compound is used as a source of the Ph2P− group.[2]

Ph2P-PPh2 + 2 Na → + 2 NaPPh2

References

  1. ^ Tam, Eric C. Y.; Maynard, Nicola A.; Apperley, David C.; Smith, J. David; Coles, Martyn P.; Fulton, J. Robin (17 August 2012). "Group 14 Metal Terminal Phosphides: Correlating Structure with ‖ JMP ‖". Inorganic Chemistry. 51 (17): 9403–9415. doi:10.1021/ic301208d. PMID 22900884.
  2. ^ Kuchen, Wilhelm; Buchwald, Hans (1959). "Zur Kenntnis der Organophosphorverbindungen, III. Umsetzungen mit Diphenylphosphin-natrium". Chem. Ber. 92: 227–231. doi:10.1002/cber.19590920126.