Chemistry of o-xylidene–metal complexes. Part 4. Stereospecific synthesis of the early transition metal meso-metallacycles [M{CH(SiMe3)C6H4CHSiMe3-o}(η-C5H5)2](M = Ti, Zr, Hf, or Nb), their reversible one-electron reduction (M = Ti, Zr, Hf, or Nb) and oxidation (M = Nb); and the X-ray crystal structure of the zirconium complex
1984 ◽
pp. 893-902
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