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Bis(η-cyclopentadienyl)tetrahydrofuran-bis(trifluoromethanesulfonato)zirconium(IV), (η-C5H5)2Zr(CF3SO3)2(THF), has been prepared by reaction of (η-C5H5)2ZrCl2 with AgCF3SO3 in tetrahydrofuran. Crystal data: Orthorhombic, Pnma, a = 15.890(5), b = 13.319(4), c = 10.376(3) Å, Z = 4. An X-ray analysis shows that the complex has a five-coordinate bent metallocene structure. The geometry of the (η-C5H5)2Zr moiety (length of the vectors between Zr and the C5 ring centroids: 2.203 and 2.214 Å, angledoi:10.1515/znb-1983-1130 fatcat:uytaotbhpffgpbduhwgmcitdhe