162524-71-2

Basic information

• Product Name: cis-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)]
• CAS NO: 162524-71-2
• Molecular Weight: 936.437
• Mol File: 162524-71-2.mol

Chemical Properties

• CAS DataBase Reference: cis-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)](CAS DataBase Reference)
• NIST Chemistry Reference: cis-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)](162524-71-2)
• EPA Substance Registry System: cis-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)](162524-71-2)

Safety Data

• Hazardous Substances Data: 162524-71-2(Hazardous Substances Data)

Upstream product

• 162524-72-3 trans-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)] 
• 162524-70-1 cis-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)] 

Downstream Products

• 162524-71-2 [Fe2(CO)4(C(CO2Me)=CHC(OMe)=O)(μ-PPh2)(μ-dppm)] 
• 162524-72-3 trans-[Fe2(CO)4(μ-C(CO2Me)=CH(CO2Me))(μ-PPh2)(μ-dppm)] 

Relevant articles and documents

Stereoselective Alkyne Insertion into a Bridging Hydride at a Diiron Centre: cis-trans Isomerisation and Metallacycle Formation

Addition of the activated alkyne dimethyl acetylenedicarboxylate (dmad) to 1 (dppm = Ph2PCH2PPh2) afforded the ?-η vinyl complex cis-(μ-PPh2)(μ-dppm)> 2.Crystallography showed that the insertion is stereoselectively cis, with the phosphorus-containing ligands also adopting a cis configuration.Ultraviolet irradiation of 2 resulted in slow conversion into a second isomer, trans-(μ-PPh2)(μ-dppm)> 3, which still retains the cis arrangement of phosphines as shown by 31P NMR spectroscopy.This transformation is reversible, 3 slowly converting back into 2 at room temperature, a process which is accelerated upon heating.At temperatures of >/= 80 deg C, 2 (and 3) was converted irreversibly into a third isomer (μ-PPh2)(μ-dppm)> 4, containing a metallacyclic ring by virtue of metal co-ordination of an ester carbonyl.X-Ray crystallography revealed a trans vinyl orientation and a trans disposition of the phosphorus-containing groups.