A “diagonal relationship” between technetium(VII) and osmium(VIII) can be proposed based on the properties of the newly synthesized title compounds. Like the valence‐isoelectronic OsO4, MeTcO3 adds olefins to form metallacycles (→cis‐diols), whereas the formally analogous MeReO3 epoxidates olefins in the presence of H2O2. This difference is presumably due to the oxidizing strength of TcVII being much greater than that of ReVII.
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Herrmann et al. (1990) studied this question.
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