Binuclear organometallic compounds. Part IV. Crystal and molecular structure of chlorobis(π-cyclopentadienyl)(triphenylsilyl)zirconium(IV)
- 1 January 1971
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2663-2666
- https://doi.org/10.1039/j19710002663
Abstract
The crystal structure of chlorobis(π-cyclopentadienyl)(triphenylsilyl)zirconium(IV) has been determined by X-ray diffraction methods. A monoclinic unit cell of dimensions a= 10·071(4), b= 17·331(7), c= 16·329(7)Å, and β= 121·57(3)°, contains four monomeric (π-C5H5)2ZrCl(SiPh3) molecules. The space group is P21/c. The structure has been refined by least-squares methods to a conventional R of 0·058, based on 2488 intensities measured on an automatic four-circle diffractometer. The co-ordination about the silicon atom is approximately tetrahedral; the co-ordination about the zirconium atom is also roughly tetrahedral, if the cyclopentadienyl ligands are regarded as unidentate. The Zr–Cl distance is 2·430(3)Å. The Zr–Si bond is unexpectedly long; its length, not previously determined, is 2·813(2)Å.Keywords
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