Conclusions
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1.
The reaction of tetracyclopentadienylzirconium with methyl and ethyl alcohols, phenol, thiophenol, and with trifluoroacetic and trichloroacetic acids, taking the reactants in a 1∶2 ratio, gave the corresponding bis(cyclopentadienyl) derivatives of zirconium.
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2.
The reaction of (C6H5)4Zr with bromine gives (C5H5)2ZrBr2 and the bromination products of cyclopentadiene.
-
3.
The action of aqueous hydrofluoric acid on (C5H5)4Zr leads to the formation of tetracyclopentadienyldizirconoxane difluoride [(C5H5)2ZrF]2O.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 139–143, January, 1972.