Three-Dimensional Structure Determination of Surface Sites
Year: 2016
Type: article
Abstract: The spatial arrangement of atoms is directly linked to chemical function. A fundamental challenge in surface chemistry and catalysis relates to the determination of three-dimensional structures with atomic-level precision. Here we determine the three-dimensional structure of an organometallic complex on an amorphous silica surface using solid-state NMR measurements, enabled through a dynamic nuclear polarization surface enhanced NMR spectroscopy approach that induces a 200-fold increase in the NMR sensitivity for the surface species. The result, in combination with EXAFS, is a detailed structure for the surface complex determined with a precision of 0.7 Å. We observe a single well-defined conformation that is folded toward the surface in such a way as to include an interaction between the platinum metal center and the surface oxygen atoms.
DOI: 10.1021/jacs.6b10894
Institutions: Lyon 1 Université, École Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Université de Lyon, Institut des Sciences Analytiques, Centre de RMN à Très Hauts Champs de Lyon, University of Florence, ETH Zurich, Durham University, École Polytechnique Fédérale de Lausanne
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Award: G8443952552
OpenAlex ID: W2560917619