Three-Dimensional Structure Determination of Surface Sites

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 angstrom. 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.


Published in:
Journal Of The American Chemical Society, 139, 2, 849-855
Year:
2017
Publisher:
Washington, American Chemical Society
ISSN:
0002-7863
Laboratories:




 Record created 2017-03-27, last modified 2018-03-17


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