Date published: 2026-4-20

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1,1,1-Tris(diphenylphosphino-methyl)ethane (CAS 22031-12-5)

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Alternate Names:
1,3-Bis(diphenylphosphino)-2-(diphenylphosphino)methyl-2-methylpropane; Triphos
CAS Number:
22031-12-5
Molecular Weight:
624.67
Molecular Formula:
C41H39P3
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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1,1,1-Tris(diphenylphosphino-methyl)ethane is a crystalline solid, ranging from white to light yellow in color. It is not soluble in water but dissolves readily in various organic solvents like benzene, toluene, and ether. The molecule features significant steric hindrance due to the bulky phosphine groups connected to its central carbon atom, rendering it a potent and selective ligand for transition metal ions within coordination chemistry. It′s capable of creating stable complexes with several transition metals such as palladium, platinum, rhodium, and iridium, which serve as catalysts in organic synthesis. With its high reactivity, 1,1,1-Tris(diphenylphosphino-methyl)ethane is used as a reagent in organic synthesis and has the characteristic of emitting phosphorescence when exposed to light. The compound can be used for the oxidation of a variety of functional groups like alcohols, amines, and ethers to their correlating acids or aldehydes and is also proficient in eliminating hydroxyl groups from carbonyl compounds.


1,1,1-Tris(diphenylphosphino-methyl)ethane (CAS 22031-12-5) References

  1. Nickel-cysteine binding supported by phosphine chelates.  |  Desrochers, PJ., et al. 2007. Inorg Chem. 46: 9221-33. PMID: 17854178

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

1,1,1-Tris(diphenylphosphino-methyl)ethane, 1 g

sc-251538
1 g
$77.00