Syntheses and characterization of tetrakis(5-tert-butylpyrazole) Fe(II) and Mn(II) complexes. Molecular structure of Fe(Pzt-Bu)4(OTF)2 |
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| Institution: | 1. Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA;2. School of Mechanical & Materials Engineering and Materials Science & Engineering Program, Washington State University, Pullman, WA, USA;3. Laboratory of Inorganic Materials, Joint Workplace of the University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czechia, and The Institute of Rock Structure and Mechanics of the ASCR, v.v.i., V Holešovičkách 41, 182 09 Prague 8, Czechia;4. U.S. Department of Energy, Office of River Protection, Richland, WA, USA;1. Department of Chemistry, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa;2. Department of Physical Chemistry, Razi University, Kermanshah, Iran;3. Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran;4. Department of Science, Babol Noshiravani University of Technology, Babol, Iran;1. Pacific Northwest National Laboratory, Richland, WA, United States of America;2. Sandia National Laboratories, Albuquerque, NM, United States of America |
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| Abstract: | Dichlorotetrakis(5-t-butylpyrazole)iron (1), dichlorotetrakis(5-t-butylpyrazole) manganese (2), and tetrakis(5-t-butylpyrazole) iron(II) bis(trifluoromethanesulfonate) (3) were prepared and characterized. The crystal structure of 3 was determined from X-ray diffraction data. Complex 3 has a distorted octahedral structure with the two triflate ligands at mutually trans positions. Complexes 1 and 2 are mild catalysts for the selective epoxidation of styrene and norbornylene. In comparison, complex 3 is an efficient catalyst for the epoxidation of norbornylene, but promotes the oxidation of styrene predominantly to benzaldehyde. |
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