Syntheses and structures of Osmium(II) and Osmium(VI) meso-tetra(benzo-15-crown-5)porphyrinates according to the spectral data |
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Authors: | Yu. A. Plachev A. Yu. Chernyadyev A. Yu. Tsivadze |
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Affiliation: | (1) Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia |
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Abstract: | The reaction of meso-tetra(benzo-15-crown-5)porphyrin (H2TCP) with the osmium carbonyl complex Os3(CO)12 yieds the corresponding osmium(II) porphyrinate OsTCP(CO). The oxidation of OsTCP(CO) with air oxygen and hydrogen peroxide in neutral and acidic media was studied. A preparative method for the synthesis of osmium(VI) meso-tetra(benzo-15-crown-5)porphyrinate (OsO2) TCP by the oxidation of OsTCP(CO) with 50% hydrogen peroxide in acetic acid was developed. The structures of new osmium porphyrinates were determined by IR, 1H NMR, and UV/Vis spectroscopies. |
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