Synthesis, Reaction and Structures of Functionally Substituted η<sup>5</sup>-Cyclopentad

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[η<sub>5</sub>-OH<sub>3</sub>C(O)C<sub>5</sub>H<sub>4</sub>Cr(CO)<sub>2</sub>]<sub>2</sub>S 1, [η<sup>5</sup>-CH<sub>3</sub>O<sub>2</sub>CC<sub&
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