Synthesis of FeBr3-cyclodextrin complexes in non-aqueous solution |
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| Affiliation: | 1. Department of Physics, Bharathiyar College of Engineering & Technology, Karaikal 609 609, Puducherry, India;2. Department of Physics, TBML College, Poraiyar 609 307, Tamilnadu, India;3. Department of Physics, AVVM Sri Pushpam College, Poondi 613 503, Tamilnadu, India;1. S.N. Arts, D.J.M. Commerce and B.N.S. Science College, Sangamner, Dist. Ahmednagar 422605, Maharashtra, India;2. Padmashri Vikhe Patil College of Arts Science and Commerce, Loni, Dist., Ahmednagar 413713, Maharashtra, India;3. Badrinarayan Barwale Mahavidyalaya, Jalna 431203, Maharashtra, India;1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, China;2. Changchun University of Science and Technology, Changchun 130012, China;1. School of Physics, Dalian University of Technology, Dalian 116024, China;2. Mechanical and Electrical Engineering College, Hainan University, Haikou 570228 China;3. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China |
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| Abstract: | Mixing FeBr3 either solid or dissolved in ethyl ether, in acetonitrile or in dichloromethane with solid β-cyclodextrin, form different type of FeBr3-cyclodextrin complexes as indicated by their stoichiometric composition and thermal and spectroscopic properties. The complexes are stable under usual atmospheric conditions. Water solutions of FeBr3 at pH 12 containing cyclodextrin are stable over 24 h. The solid complexes were characterized by DSC and TGA analysis as well as by IR spectroscopy. It is shown that the complexes obtained from the reaction of solid cyclodextrin with FeBr3 dissolved in ethyl ether, acetonitrile, or dichloromethane catalyze the oxidation of methyl phenyl sulfide to methyl phenyl sulfoxide although in different yields. The best complex for this purpose is the one prepared in CH2Cl2 which afforded the sulfoxide in good yield. |
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