Synthesis, structure, and reactivity of tetravalent cerium complexes containing oxidizing oxyanion ligands
| Autor: | Kai-Hong Wong, Wa-Hung Leung, Yat-Ming So, Wai-Man Cheung, Ka-Chun Au-Yeung, Ian D. Williams, Herman H. Y. Sung, Wai-Ho Wong |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010405 organic chemistry
Organic Chemistry Periodate chemistry.chemical_element Sulfoxide Oxyanion 010402 general chemistry Persulfate 01 natural sciences Biochemistry Medicinal chemistry 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Cerium chemistry Oxidizing agent Materials Chemistry Physical and Theoretical Chemistry Cyclic voltammetry Iodate |
| Zdroj: | Journal of Organometallic Chemistry. 899:120902 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2019.120902 |
| Popis: | Treatment of [(LOEt)2CeCl2] (LOEt− = [(η5-C5H5)Co{P(O)(OEt)2}3]-) (1) with NaIO4 in water afforded a Ce(IV) periodate complex, 2. Recrystallization of 2 from Et2O afforded orange single crystals that were found to consist of two independent molecules: [(LOEt)2Ce(IO4)2] (2a) and [(LOEt)2Ce(IO4)(H2O)][IO4] (2b). Similarly, treatment of 1 with K2S2O8 in water afforded the Ce(IV) persulfate complex [(LOEt)2Ce(η2-S2O8)] (3). Reaction of [(LOEt)2CeCl2] with I2O5 in MeCN in the presence of a small amount of water led to isolation of the iodate complex [(LOEt)2Ce(IO3)2]⋅H+ICl2− (4). The Ce(IV) periodate and persulfate complexes have been characterized by single-crystal X-ray diffraction. The reduction potentials of the Ce(IV) complexes have been determined by cyclic voltammetry. The Ce(IV) periodate and iodate complexes can oxidize methyl p-tolyl sulfide to sulfoxide. |
| Databáze: | OpenAIRE |
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