New entry to piano -stool electron rich (pentamethyl cyclopentadienyl) iron complexes
Author
dc.contributor.author
Díaz, Eloisa
Author
dc.contributor.author
Cabezas Zúñiga, Nancy
Author
dc.contributor.author
Mendizábal Emaldía, Fernando
Admission date
dc.date.accessioned
2018-12-20T14:26:43Z
Available date
dc.date.available
2018-12-20T14:26:43Z
Publication date
dc.date.issued
2002
Cita de ítem
dc.identifier.citation
Journal of the Chilean Chemical Society, 47, 213-220 (2002)
Identifier
dc.identifier.issn
03661644
Identifier
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10.4067/S0366-16442002000300003
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/155985
Abstract
dc.description.abstract
A new route to the electron rich pentamethylcyclopetadienyl iron complexes (n5-C5Me5)=Cp*) starting from the commercially available dimer [Cp*Fe(CO)2]2, is presented. Reaction of the dimer with I2 in CH2Cl2, affords the mononuclear carbonyl complex Cp*Fe(CO)2I which in turn reacts with bis(diphenylphosphinoethane) in toluene under Uv irradiation to give Cp*Fe(dppe)I. Treatment of Cp*Fe(dppe)I with the neutral ligands L (L = CH3CN, PPh3, SEt2) in the presence of TIPF6 affords the cationic derivatives [Cp*Fe(dppe)L]PF6 ,while that the reaction with S2(CH2C6H5)2 in CH3OH yields the thiolate complex [Cp*Fe(dppe)S-CH2C6H5] PF6 .The unusual magnetic properties of these complexes are discussed. Extended Hückel OM calculation confirmed the most electron rich character of the Cp*Fe(dppe)+ derivatives than their unsustituted CpFe(dppe)+ .Electrochemical as well as Mösbauer data are in agree with this.