Molar mass 578.62 g/mol Density 1.34 g/cm³ Appearance colorless solid | Formula C39H32OP2 Main hazards flammable PubChem CID 636044 | |
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Melting point 224 to 228 °C (435 to 442 °F; 497 to 501 K) | ||
Xantphos is an organophosphorus compound derived from the heterocycle xanthene. It is used as a bidentate ligand and is noteworthy for having a particularly wide bite angle. Such ligands are useful in the hydroformylation of alkenes. Illustrative of its wide bite angle, it forms both cis and trans adducts of platinum(II) chloride. A related bidentate ligand with a greater bite angle is spanphos.
The ligand is prepared by double directed lithiation of 9,9-dimethylxanthene with sec-butyllithium followed by treatment with chlorodiphenylphosphine.
References
Xantphos Wikipedia(Text) CC BY-SA