Pulse radiolysis and product analysis of triethylsilane in methanol |
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| Affiliation: | 1. Institute for Theoretical Chemistry and Radiation Chemistry, The University of Vienna and Ludwig Boltzmann Institute for Radiation Chemistry, Währingerstr. 38, A-1090 Vienna, Austria;2. Max-Planck-Institute for Radiation Chemistry, Stiftstr. 34-36, 4330 Mülheim an der Ruhr, Fed. Rep. Germany;1. Department of Chemical Engineering, Northeastern University, Boston, MA 02115, United States;2. School of Chemistry and Materials, Ningde Normal University, Ningde, Fujian 352100, China;3. Key Laboratory for Water Environment and Resources, Tianjin Normal University, 300387, China;1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, PR China;2. Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China;1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan, 030024, PR China;2. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China;3. State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, 300071, PR China;1. Optical Chemosensors & Applied Photochemistry Group (GSOLFA), Faculty of Chemistry, Universidad Complutense de Madrid, 28040, Madrid, Spain;2. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Carrer Marcel·lí Domingo 1, 43007, Tarragona, Spain;3. ICREA, Passeig Lluís Companys 23, 08010, Barcelona, Spain;1. INM – Leibniz Institute for New Materials, Campus D2 -2, D-66123, Saarbrücken, Germany;2. Department of Physics, Saarland University, Campus D2 -2, D-66123, Saarbrücken, Germany;1. School of Chemical Engineering, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China;2. Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Xi’an, Shaanxi 710069, People’s Republic of China;3. Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Xi’an, Shaanxi 710069, People’s Republic of China;4. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, School of Chemistry & Materials Science, Northwest University, Xi’an, Shaanxi 710069, People’s Republic of China |
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| Abstract: | The transients resulting from triethylsilane (R3SiH) in airfree high purity methanol were studied by pulse radiolysis. Their total absorption spectrum shows a maximum at 265 nm (ϵ265 = 5300 dm3mol−1cm−1) and disappears by a second order reaction with a rate constant of 2k = 9.3±109dm3mol−1s−1. R3SiH reacts with solvated electrons (e-s) in methanol with k = 9.2±0.2) × 108dm3mol−1s−1. The R3S̊i radicals react selectively and efficiently with the CH3O̊ and C̊H2OH species resulting in the formation of triethylmethoxysilane (R3Si-OCH3) and triethylsilylmethanol (R3Si-C̊H2OH), respectively. R3Si-OC̊H3 is subsequently converted into various final products which were identified and their yields determined. A reaction mechanism is suggested for the explanation of the rather complicated reactions pathways. |
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