Tetraphenyldiphosphine Explained

Tetraphenyldiphosphine is the organophosphorus compound with the formula [PPh<sub>2</sub>]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 NaClThe 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 . Group 14 Metal Terminal Phosphides: Correlating Structure with ‖ JMP ‖ . Inorganic Chemistry . 17 August 2012 . 51 . 17 . 9403–9415 . 10.1021/ic301208d. 22900884 .
  2. Zur Kenntnis der Organophosphorverbindungen, III. Umsetzungen mit Diphenylphosphin-natrium. Wilhelm . Kuchen. Hans. Buchwald. Chem. Ber.. 92. 227–231. 1959. 10.1002/cber.19590920126.