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).
3.svg)
| |
| Identifiers | |
|---|---|
3D model (JSmol)
|
|
| ChemSpider | |
PubChem CID
|
|
| |
| |
| 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).
| |
Synthesis and reactions
editThe 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
edit- ^ 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.
- ^ Therien, M. J.; Trogler, W. C. (1990). "Bis(Phosphine) Derivatives of Iron Pentacarbonyl and Tetracarbonyl (Tri- tert -Butylphosphine)Iron(O)". Vol. 28. pp. 173–9. doi:10.1002/9780470132593.ch45. ISBN 9780471526193.
{{cite book}}:|journal=ignored (help); Missing or empty|title=(help) - ^ Keiter, Richard L.; Keiter, Ellen A.; Boecker, Carol A.; Miller, David R.; Hecker, Karl H. (1997). "Tricarbonylbis(Phosphine)Iron(0) Complexes". Inorganic Syntheses. 31: 210–214. doi:10.1002/9780470132623.ch31. ISBN 9780470132623.
- ^ Sowa, John R.; Zanotti, Valerio; Facchin, Giacomo; Robert Angelici (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.
- ^ 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.