Hydrogen Adsorption on the Indium-Rich Indium Phosphide (001) Surface: A Novel Way to Produce Bridging In−H−In Bonds
- 20 November 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 124 (50) , 15119-15124
- https://doi.org/10.1021/ja020348p
Abstract
The indium phosphide (001) surface provides a unique chemical environment for studying the reactivity of hydrogen toward the electron-deficient group IIIA element, indium. Hydrogen adsorption on the In-rich δ(2 × 4) reconstruction produced a neutral, covalently bound bridging indium hydride. Using vibrational spectroscopy and ab initio cluster calculations, two types of bridging hydrides were identified, a (μ-H)In2 and a (μ-H)2In3 “butterfly-like” structure. These structures were formed owing to the large thermodynamic driving force for adsorption of H atoms on solid-state indium dimers.Keywords
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