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Título : A Cationic Rh(III) Complex That Efficiently Catalyzes Hydrogen Isotope Exchange in Hydrosilanes
Autor : Campos, Jesús, Esqueda Oliva, Ana Cristina, López-Serrano, Joaquín, Sánchez, Luis J., Cossio, Fernando P., Cozar, Abel de, Álvarez, Eleuterio, Maya, Celia, Carmona Guzmán, Ernesto
Palabras clave : Cyclometalated phosphine
Hydrogen Isotope
Fecha de publicación : 9-Nov-2010
Editor: American Chemical Society
Citación : Journal of the American Chemical Society 132(47): 16765-16767 (2010)
Resumen: The synthesis and structural characterization of a mixed-sandwich (η5-C5Me5)Rh(III) complex of the cyclometalated phosphine PMeXyl2 (Xyl = 2,6-C6H3Me2) with unusual κ4-P,C,C′,C′′ coordination (compound 1-BArf; BArf = B(3,5-C6H3(CF3)2)4) are reported. A reversible κ4 to κ2 change in the binding of the chelating phosphine in cation 1+ induced by dihydrogen and hydrosilanes triggers a highly efficient Si−H/Si−D (or Si−T) exchange applicable to a wide range of hydrosilanes. Catalysis can be carried out in an organic solvent solution or without solvent, with catalyst loadings as low as 0.001 mol %, and the catalyst may be recycled a number of times.
Descripción : 3 páginas, 2 figuras, 1 tabla, 3 esquemas.
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ISSN: 0002-7863
DOI: 10.1021/ja108521b
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