Diiron propanedithiolate hexacarbonyl is the
organoiron complex
Organoiron chemistry is the chemistry of iron compounds containing a carbon-to-iron chemical bond. Organoiron compounds are relevant in organic synthesis as reagents such as iron pentacarbonyl, diiron nonacarbonyl and disodium tetracarbonylferrate. ...
with the formula Fe
2(S
2C
3H
6)(CO)
6. It is a red
diamagnetic solid. It adopts a symmetrical structure with six terminal CO ligands. The complex is a precursor to
hydrogenase mimics.
It is prepared by the reaction of
1,3-propanedithiol
1,3-Propanedithiol is the chemical compound with the formula HSCH2CH2CH2SH. This dithiol is a useful reagent in organic synthesis. This liquid, which is readily available commercially, has an intense stench.
Use in organic synthesis
1,3-Propan ...
with
triiron dodecarbonyl
Triiron dodecarbonyl is the organoiron compound with the formula Fe3(CO)12. It is a dark green solid that sublimes under vacuum. It is soluble in nonpolar organic solvents to give intensely green solutions. Most low-nuclearity clusters are pale ...
:
:2 Fe
3(CO)
12 + 3 C
3H
6(SH)
2 → 3 Fe
2(S
2C
3H
6)(CO)
6 + 3 H
2 + 6 CO
In general, the CO ligands can be substituted by
cyanide
Cyanide is a naturally occurring, rapidly acting, toxic chemical that can exist in many different forms.
In chemistry, a cyanide () is a chemical compound that contains a functional group. This group, known as the cyano group, consists of a ...
,
phosphines,
isocyanides,
N-heterocyclic carbenes, and other donor ligands. Monosubstitution can be achieved through an in situ generation of the acetonitrile complex.
Upon irradiation of Fe
2(S
2C
3H
6)(CO)
6 with ultraviolet (UV) light, CO-photolysis occurs with the transient formation of the unsaturated species followed by the formation of the solvent adduct.
[Mack, A. R. Ridley, A. I. Stewart, K. Adamczyk, H. N. Ghosh, B. Kerkeni, Z. X. Guo, E. T. J. Nibbering, C. J. Pickett, N. T. Hunt "(1,3-Propanedithiolato)hexacarbonyl and Cyanide Derivatives", Inorg. Chem. 2008, 47, 7453-7455 ]
References
{{Iron compounds
Carbonyl complexes
Organoiron compounds
Thiolates
Chemical compounds containing metal–metal bonds