Journal of the Chemical Society, Dalton Transactions p. 2347 - 2350 (1984)
Update date:2022-08-17
Topics:
Girolami, Gregory S.
Wilkinson, Geoffrey
Thornton-Pett, Mark
Hursthouse, Michael B.
The interaction of the titanium(II) complex trans-TiCl2(dmpe)2 with 2 equivalents of Na(C5H5) or Na(C5H4Me) in diethyl ether gives the dark orange cyclopentadienyl compounds Ti(C5H4R)2(dmpe) (R=H or Me, dmpe=Me2PCH2CH2PMe2).These diamagnetic 18-electron species give n.m.r. spectra consistent with a bent metallocene structure, confirmed by X-ray structure analysis of Ti(C5H4Me)2(dmpe) for wich Ti-P 2.533(6) Angstroem (mean), Ti-C 2.310(5)-2.441(6) Angstroem P-Ti-P 76.9(2) deg, and centroid-Ti-centroid=135.3(2) deg.The cyclopentadienyl rings are very slightly tilted towards the dmpe ligand due to non-bonding contacts between the ring-boundmethyl groups.
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