title: Direct Estimation of the Surface Location of Immobilized Functional Groups for Concerted Catalysis Using a Probe Molecule.
abstract: The location of active sites during concerted catalysis by a metal complex and tertiary amine on a SiO2 surface is discussed based on the interaction between the functionalized SiO2 surface and a probe molecule, p-formyl phenylboronic acid. The interactions of the probe molecule with the surface functionalities, diamine ligand, and tertiary amine, were analyzed by FT-IR and solid-state (13)C and (11)B MAS NMR. For the catalyst exhibiting high 1,4-addition activity, the diamine ligand and tertiary amine base exist in closer proximity than in the catalyst with low activity.
authors: Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan.
authors: Hiroto
authors: H
authors: Noda
authors: Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan.
authors: Ken
authors: K
authors: Motokura
authors: Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, 560-8531, Japan.
authors: Yusuke
authors: Y
authors: Wakabayashi
authors: Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, 560-8531, Japan.
authors: Kaori
authors: K
authors: Sasaki
authors: Japan Synchrotron Radiation Research Institute/SPring-8, Kouto, Sayo, Hyogo, 679-5198, Japan.
authors: Hiroo
authors: H
authors: Tajiri
authors: Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan.
authors: Akimitsu
authors: A
authors: Miyaji
authors: Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan.
authors: Sho
authors: S
authors: Yamaguchi
authors: Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8502, Japan. tbaba@chemenv.titech.ac.jp.
authors: Toshihide
authors: T
authors: Baba
keywords: active site distance; amine; heterogeneous concerted catalysis; probe molecule