Synthesis,characterization and catalytic activity of a new sandwich-type tungstophosphate functionalized by carboxyethyltin |
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| Affiliation: | 1. Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049–001 Lisbon, Portugal;2. Organic Chemistry Department, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan;3. Organic Chemistry Department, RUDN University, 6 Miklukho-Maklaya Str., Moscow 117198, Russian Federation;4. National University of Science and Technology «MISIS», Moscow Leninsky Prosp. 4, 119049 Moscow, Russian Federation;5. Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russian Federation;6. Department of Ecology and Soil Sciences, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan;1. Institut für Physikalische und Theoretische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria;2. Department of Chemistry, University of Louisiana at Lafayette, P.O. Box 43700, Lafayette, LA 70504, USA;1. Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;2. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;3. Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, USA;4. Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China;5. Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, Georgia 30322, USA |
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| Abstract: | Reaction of the trivacant Keggin-type tungstophosphate (A-α-Na9PW9O34⋅ 7H2O, abbreviated as {PW9}) with estertin (Cl3Sn(CH2)2COOCH3) in an acetate buffer solution leads to the formation of a new sandwich-type tungstophosphate functionalized by carboxyethyltin, Na3K8K3{Sn(CH2)2COO}2(A-α-PW9O34)2]·18H2O (1). The title compound was characterized by single crystal X-ray diffraction, elemental analysis, IR, TG, PXRD, 13C, 31P and 119Sn NMR. Structural analysis reveals that the basic skeletal structure of 1 is made up of two Sn(CH2)2COO]2 + groups and three K+ ions sandwiched by two A-α-PW9O34]9 − building blocks, which shows the original estertin precursors hydrolyzed into carboxyethyltin. The catalytic activity of 1 has been investigated. |
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