Date published: 2026-2-12

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1,2-Bis(diphenylphosphino)ethane monooxide (CAS 984-43-0)

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Alternate Names:
[2-(Diphenylphosphino)ethyl]diphenylphosphine oxide
CAS Number:
984-43-0
Molecular Weight:
414.42
Molecular Formula:
C26H24OP2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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1,2-Bis(diphenylphosphino)ethane monooxide is a highly regarded ligand in the field of organometallic chemistry. These complexes, in turn, have garnered extensive utility in catalytic reactions encompassing cross-coupling, hydrogenation, and C-H activation.1,2-Bis(diphenylphosphino)ethane monooxide has been instrumental in synthesizing chiral compounds and facilitating asymmetric catalysis. The current understanding suggests that 1,2-Bis(diphenylphosphino)ethane monooxide exerts its stabilizing influence by coordinating with the metal center in transition metal complexes. As a consequence, the resulting complex exhibits enhanced stability and reactivity, thereby amplifying its catalytic efficacy.


1,2-Bis(diphenylphosphino)ethane monooxide (CAS 984-43-0) References

  1. Cytotoxicity of half sandwich ruthenium(II) complexes with strong hydrogen bond acceptor ligands and their mechanism of action.  |  Das, S., et al. 2010. J Inorg Biochem. 104: 93-104. PMID: 19913918
  2. Os(dppe)(dppe monoxide)(CO)Cl2 as an active intermediate in the synthesis of strongly luminescent divalent osmium complexes  |  Salzitsa Anastasova a, Andrzej Kapturkiewicz b, Jacek Nowacki c. 2005. Inorganic Chemistry Communications. 8: 1177-1180.
  3. Synthesis, crystal structures and spectra of Hg(II)-1,2-bis(diphenylphosphino)ethane monoxide complexes: Monomer and polymer formation  |  Mothi Mohamed Ebrahim a b, Antonia Neels a, Helen Stoeckli-Evans a, Krishnaswamy Panchanatheswaran b. 2007. Polyhedron. 26: 1277-1284.
  4. Synthesis and characterization of osmium(II) chlorocarbonyl complexes with bidentate phosphines  |  Anna Kamecka a, Andrzej Kapturkiewicz a b, Zbigniew Karczmarzyk a, Waldemar Wysocki a. 2013. Inorganic Chemistry Communications. 27: 138-141.
  5. Novel Co(II) coordination polymers based on 1,2-bis(diphenylphosphino)ethane monoxide and dioxide ligands  |  Lukáš Smolko, Juraj Černák & Michal Dušek. 2019. Monatshefte für Chemie - Chemical Monthly. 150: 639–647.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

1,2-Bis(diphenylphosphino)ethane monooxide, 1 g

sc-222796
1 g
$153.00