Structural chemistry of peroxo compounds of group VI transition metals: I. Peroxo complexes of chromium (a review) |
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Authors: | V. S. Sergienko |
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Affiliation: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskiĭ pr. 31, Moscow, 119991, Russia |
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Abstract: | The specific features revealed in the structure of the d 3 Cr(III), d 2 Cr(IV), d 1Cr(V), and d 0 Cr(VI) peroxo complexes with the ratios M:O2 = 1:1, 1:2, and 1:4 are considered. It is noted that, in eleven compounds of the general formula Cr(O2)nOm A p (n = 1, 2, 4; m = 0, 1; p = 0–4), the metal atoms can be in four oxidations states: +3 (d 3), +4 (d 4), +5 (d 1), and +6 (d 0). This property distinguishes chromium peroxo compounds from molybdenum and tungsten dioxygen complexes, which, with one exception, are represented by the d 0 M(VI) compounds. |
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