10 Synthesis of the New Dinuclear Iron Complexes

Wednesday, November 4, 2009
Ballroom A+B (Camino Real Hotel)
Eulalia Ramirez-Oliva, Department Chemistry Professor , Department of Chemistry, Universidad de Guanajuato, Guanajuato, Gto., Mexico
Beatriz Alonso, Professor , Department of Inorganic Chemistry, Universidad Autonoma de Madrid, Spain
Isabel Cuadrado, Department of Inorganic Chemistry , Department of Inorganic Chemistry, Universidad Autonoma de Madrid, Spain
Dinuclear iron complexes linked by bridge (bis)cyclopentadienyl ligand m-{Si(CH3)CH=CH2}(C5H5)2 (1) were syntetized. The monobridged (bis)-Cp was prepared according to literature procedures. Subsequent reaction of (1) with iron(0) pentacarbonyl in  xylene solution at 130 °C results in  the monobridged dinuclear complex m-{Si(CH3)CH=CH2}[(h5-C5H4)Fe(m-CO)(CO)]2 (2), wich was isoladed in a 20 % yield as a red-dark oil. The reaction of (2) with iodine in chloroform solution at 75 °C leads to the formation of the dinuclear complex (3), m-{Si(CH3)CH=CH2}[(h5-C5H4) Fe(CO)2I]2, with a 30% yield  as a black solid. The redox behaviour of the compound (2) was studied by cyclic voltammetry (CV).
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