Vibrational spectra of a ferrocenyl phosphine derivative chemisorbed on 3-aminopropylsilyl modified silica gel |
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| Institution: | 1. Ss. Cyril and Methodius University in Skopje, Faculty of Natural Sciences and Mathematics, Institute of Chemistry, Arhimedova 5, 1000 Skopje, Republic of Macedonia;2. University of Leipzig, Faculty of Chemistry and Mineralogy, Institute of Inorganic Chemistry, Johannisallee 29, D-04103 Leipzig, Germany;1. Instituto Universitario de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Av. de los Naranjos s/n, 46022 Valencia, Spain;2. Center of Excellence for Advanced Materials Research, King Abdullaziz University, Jeddah, Saudi Arabia;1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116012, PR China;4. Catalytic Processes and Materials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands;1. Department of Neurology, Chang Gung Memorial Hospital, Taoyuan, Taiwan;2. Department of Neurology, Chang Gung University, College of Medicine, Taoyuan, Taiwan;1. College of Science, Nanjing Forestry University, Nanjing, 210037, China;2. College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China;1. Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124, Pisa, Italy;2. CIRCC, via Celso Ulpiani 27, I-70126, Bari, Italy |
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| Abstract: | Samples of silica gel dried at different temperatures, silica gel modified with 3-aminopropylsilyl (APS) and silica gel modified with APS and further with a ferrocenyl phosphine derivative were investigated by DRIFT, transmission FTIR and MicroRaman spectroscopy. The reaction between 3-aminopropyltrimethoxysilane (APTMS) and silica gel was mainly identified by the diminishing or vanishing intensity of the stretching band of the free OH groups in the silica gel. Further chemical reaction of the APS groups with a ferrocenyl phosphine derivative (suitable as ligand in homogeneous catalysis) was identified in the IR spectra by the appearance of the C N stretching band of the formed Schiff base, and diminishing intensity of the δ(NH2) modes. According to the IR spectra the reaction of the ferrocenyl phosphine derivative with the APS-modified silica gel is almost quantitative. From the recorded IR and Raman spectra, conclusions concerning the substitution of APTMS methoxy groups during the chemisorption on silica gel were derived. Through deconvolution of the complex Raman band in the siloxy stretching region of the APS-modified silica gel, the newly formed siloxy bond was identified. |
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| Keywords: | 3-Aminopropyltrimethoxysilane Silica gel Ferrocenyl phosphine derivative Chemisorption Vibrational spectra |
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