Synthesis, characterization and reactivity of iron-olefin complexes of the type [CpFe(CO)(2)(eta(2)-CH2=CHR)]X-+(-) (Cp=eta(5)-C5H5; R = CH3 to n-C14H29; X = PF6 or BF4)

摘要

A series of iron-olefin complexes of the type [CpFe(CO)(2)(eta(2)-CH2=CHR)](+) (R = CH3 to n-C14H29) have been prepared using various synthesis methods. In addition, the complexes [Cp*Fe(CO)(2) (eta(2)-CH2=CHR)](+) (Cp* = eta(5)-C-5(CH3)(5); R = CH3, n-C3H7 and n-C14H29) and [CpRu(CO)(2)(eta(2)-CH2=CHR)](+) (R = CH3, n-C3H7 and n-C14H29) have been synthesized by reacting the iron-alkyl complexes Cp*Fe(CO)(2)(CH2CH2R) or ruthenium-alkyl complexes CpRu(CO)(2)(CH2CH2R) with Ph3CPF6. A number of these complexes are new and have been fully characterized by analytical and spectroscopic methods. The reaction of [CpFe(CO)(2)(eta(2)- CH2=CHR)](+) with the isopropoxide ion gave the new ether derivatives [CpFe(CO)(2)(CH2CH{OCH(CH3)(2)}R)] (R = CH3, n-C2H5, n-C4H9 and n-C13H27). (C) 2003 Elsevier B.V. All rights reserved. [References: 23]