Charge-transfer enhancement in infrared absorption of thiocyanate ions adsorbed on a gold electrode in the Kretschmann ATR configuration |
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| Institution: | 1. Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India;2. Department of Chemistry, Kazi Nazrul University, Asansol, West Bengal, India;1. Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64/13, 01601 Kyiv, Ukraine;2. Max-Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, D-45470 Mülheim an der Ruhr, Germany;3. Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany;4. Department of Chemistry, University of Jyväskylä, PO Box 35, FI-40014 Jyväskylä, Finland;1. Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh;2. Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London SE1 1DB, UK;3. Department of Chemistry, University of North Texas, 1155 Union Circle, Box 305070, Denton, TX 76203, USA;1. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow 119991, Russia;2. N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninskii pr., 119991 Moscow, Russia;3. D.I. Mendeleev Russian Chemical Technological University, 9 Miusskaya Sq., 125047 Moscow, Russia;4. G.V. Plekhanov Russian University of Economics, 36 Stremyannyi Line, 117997 Moscow, Russia;5. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;1. Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China;2. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030051, China;1. Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic;2. Regional Centre for Applied Molecular Oncology (RECAMO), Masaryk Memorial Cancer Institute, Žlutý kopec 7, 656 53 Brno, Czech Republic |
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| Abstract: | The intensity of an enhanced infrared absorption of SCN− ions adsorbed on an Au film electrode reaches a maximum at a negative electrode potential, where the number of adsorbed ions should be smaller than at higher potentials. In addition, the enhancement of infrared absorption is restricted to species adsorbed directly on the electrode surface. These observations suggest that a charge-transfer enhancement is working on the infrared absorption of the SCN−/Au electrode system. A probable precursor of the thiocyanato complex of Au was detected in the same system. |
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