Chemistry:Tetraphenyldiphosphine
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| Preferred IUPAC name
Tetraphenyldiphosphane | |
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CompTox Dashboard (EPA)
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| Properties | |
| C24H20P2 | |
| Molar mass | 370.372 g·mol−1 |
| Appearance | white solid |
| Density | 1.292 g/cm3 |
| Melting point | 125 °C (257 °F; 398 K) |
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| GHS Signal word | Danger |
| H250 | |
| P210, P222, P280, P302+334, P370+378, P422 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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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
- ↑ 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.
- ↑ Kuchen, Wilhelm; Buchwald, Hans (1959). "Zur Kenntnis der Organophosphorverbindungen, III. Umsetzungen mit Diphenylphosphin‐natrium". Chem. Ber. 92: 227–231. doi:10.1002/cber.19590920126.
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