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Synthesis, immobilization and catalytic activity of some silylated cyclopentadienyl rhodium(I) complexes |
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| Authors: | Herbert Schumann Mansour Hasan Faina Gelman David Avnir and Jochanan Blum |
| Institution: | a Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Straße des 17, Juni 135, D-10623, Berlin, Germany b Department of Organic Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel |
| Abstract: | The mixture of isomers of silylated cyclopentadiene derivative C5H5CH2CH2Si(OMe)3 (1) has been used for the syntheses of the mononuclear Rh(I) complexes η5-C5H4(CH2)2Si(OMe)3]Rh(CO)2 (3). η5-C5H4(CH2)2Si(OMe)3]Rh(COD) (4) and η5-C5H4(CH2)2Si(OMe)3]Rh(CO)(PPh3) (5). Upon entrapment of 3–5 in silica sol-gel matrices, air stable, leach-proof and recyclable catalysts 6–8 resulted. Their catalytic activities in some hydrogenation processes were compared with those of the non-immobilized complexes 3–5, as well as with those of homogeneous and heterogenized non-silylated analogs, 9–14. |
| Keywords: | Catalytic hydrogenation Rhodium complexes Silylated cyclopentadienyl complexes Sol-gel matrices |
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