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Triphenylphosphine oxide (often abbreviated TPPO) is the organophosphorus compound with the formula OP(C 6 H 5) 3, also written as Ph 3 PO or PPh 3 O (Ph = C 6 H 5). It is one of the more common phosphine oxides. This colourless crystalline compound is a common but potentially useful waste product in reactions involving triphenylphosphine.
Melting point: 80 °C (176 °F; 353 K) ... slow oxidation by air to give triphenylphosphine oxide, ... the corresponding amine in high yield at room temperature with ...
The structure of the phosphine oxide is not strongly perturbed by coordination. The geometry at phosphorus remains tetrahedral. The P-O distance elongates by ca. 2%. In triphenylphosphine oxide, the P-O distance is 1.48 Å. [3] In NiCl 2 [OP(C 6 H 5) 3] 2, the distance is 1.51 Å (see figure).
The hydrolysis of phosphorus(V) dihalides also affords the oxide: [9] R 3 PCl 2 + H 2 O → R 3 PO + 2 HCl. A special nonoxidative route is applicable secondary phosphine oxides, which arise by the hydrolysis of the chlorophosphine. An example is the hydrolysis of chlorodiphenylphosphine to give diphenylphosphine oxide: Ph 2 PCl + H 2 O → Ph ...
Melting point: 131 °C (268 °F; 404 K) Hazards GHS labelling: Pictograms. Signal word. Warning: ... Triphenylphosphine; 2-(Diphenylphosphino)anisole; References
Melting point: 22 to 24 °C (72 to 75 °F; 295 to 297 K) Boiling point: 360 °C (680 °F; 633 K) Solubility in water. low Solubility: organic solvents
Melting point: 127 °C (261 °F; 400 K) Boiling point: 347 to 348 °C (657 to 658 °F; 620 to 621 K) Solubility in water. ... Triphenylphosphine; References
Melting point: 7.20 °C (44.96 °F; 280.35 K) Boiling point: 232.5 °C (450.5 °F; 505.6 K) CRC [5] Solubility in water. ... (such as triphenylphosphine oxide), ...