Surface Organometallic Chemistry on Metals: Evidence for the Formation of a Stable (Rhs)2Ge(H)(CH2)4OH Fragment at the Surface of a Rhodium Nanoparticle

详细信息    查看全文

• 作者：Emmanuel Tena ; Michel Spagnol ; Jean-Pierre Candy ; Aimery de Mallmann ; Steven Fiddy ; Judith Corker ; and Jean-Marie Basset
• 刊名：Chemistry of Materials
• 出版年：2003
• 出版时间：April 22, 2003
• 年：2003
• 卷：15
• 期：8
• 页码：1607 - 1611
• 全文大小：344K
• 年卷期：v.15,no.8(April 22, 2003)
• ISSN：1520-5002

文摘

A grafted organogermanium moiety was observed on a rhodium surface, starting with anorganogermane compound, (Ad)GeH₃ (Ad = adamantyl) (Taoufik et al. J. Am. Chem. Soc.1996, 118, 4167). Recently, new surface germanium complexes with functional groups graftedon Pt and Rh particles were prepared by reaction under hydrogen in propan-2-ol oforganogermane complexes H₃GeR^f (R^f = -R-OH or R-OMe) with the surface of rhodiumcatalysts (Tena et al. J. Mol. Catal. 1999, 146, 53). It is proposed that grafted organometallicfragments with formula Rh_s[H_xGeR^f_y]_z/SiO₂ could be stabilized on the metallic surface. Thispaper reports the characterization by various physical techniques of the surface complexesobtained by reaction of H₃Ge-(CH₃)₄-OH with the reduced surface of rhodium catalystssupported on silica.