Bis(triphenylphosphine)iron tricarbonyl
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/2C18H15P.3CO.Fe/c2*1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;3*1-2;/h2*1-15H;;;;
    Key: NPCXYZUUVGQEGS-UHFFFAOYSA-N
  • [C-]#[O+].[C-]#[O+].[C-]#[O+].C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.C1=CC=C(C=C1)P(C2=CC=CC=C2)C3=CC=CC=C3.[Fe]
Properties
C39H30FeO3P2
Molar mass 664.459 g·mol−1
Appearance yellow solid
Melting point 262–266 °C (504–511 °F; 535–539 K) decomp
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tricarbonylbis(triphenylphosphine)iron(0) is a coordination complex with the formula Fe(CO)3(PPh3)2 (Ph = C6H5). A yellow solid, this complex is derived from iron pentacarbonyl by replacement of two carbonyl ligands by triphenylphosphine (PPh3).

Strynthesis and reactions

The title complex can be prepared by reaction of triiron dodecacarbonyl with excess triphenylphosphine:[1]

Fe3(CO)12 + 6 P(C6H5)3 → 3 Fe(CO)3(P(C6H5)3)2 + 3 CO

(Triphenylphosphine)iron tetracarbonyl is an intermediate in the synthesis of this compound. The title complex can also be produced more efficiently by borohydride-catalyzed substitution of iron pentacarbonyl.[2][3]

Protonation gives the ferrous hydride:[4]

Fe(CO)3(P(C6H5)3)2 + HBF4 → [HFe(CO)3(P(C6H5)3)2]BF4

Both the mono- and bis(triphenylphosphine) complexes were originally described by Walter Reppe.[5]

References

  1. ↑ Clifford, A. F.; Mukherjee, A. K. (1966). "Iron Carbonyl Complexes of Triphenylphosphine, Triphenylarsine, and Triphenylstibine". Inorganic Syntheses. Vol. VIII. pp. 185–191. doi:10.1002/9780470132395.ch49. ISBN 9780470131671.
  2. ↑ Therien, M. J.; Trogler, W. C. (1990). Bis(phosphine) Derivatives of Iron Pentacarbonyl and Tetracarbonyl(tri-tert-butylphosphine)iron(0). Inorganic Syntheses. Vol. 28. pp. 173–9. doi:10.1002/9780470132593.ch45. ISBN 9780471526193. {{cite book}}: |journal= ignored (help)
  3. ↑ Keiter, Richard L.; Keiter, Ellen A.; Boecker, Carol A.; Miller, David R.; Hecker, Karl H. (1997). Tricarbonylbis(phosphine)iron(0) Complexes. Inorganic Syntheses. Vol. 31. pp. 210–214. doi:10.1002/9780470132623.ch31. ISBN 9780470132623.
  4. ↑ Sowa, John R.; Zanotti, Valerio; Facchin, Giacomo; Angelici, Robert J. (1991). "Heats of Protonation of Transition-Metal Complexes: The Effect of Phosphine Basicity on Metal Basicity in CpIr(CO)(PR3) and Fe(CO)3(PR3)2". Journal of the American Chemical Society. 113 (24): 9185–9192. doi:10.1021/ja00024a026.
  5. ↑ Reppe, Walter; Schweckendiek, Walter Joachim (1948). "Cyclisierende Polymerisation von Acetylen. III Benzol, Benzolderivate und hydroaromatische Verbindungen". Justus Liebigs Annalen der Chemie. 560: 104–116. doi:10.1002/jlac.19485600104.
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