117924-34-2Relevant articles and documents
Unsymmetrically substituted hafnacyclopentadiene compounds: synthesis and structure
Sabade, Milimd B.,Farona, Michael F.,Zarate, Eugene A.,Youmgs, Wiley J.
, p. 347 - 356 (1988)
Hafnocene dichloride was reduced with amalgamated magnesium in the presence of asymmetric alkynes to give high yields of the corresponding bis(cyclopentadienyl)hafnacyclopentadiene compounds.An X-ray crystal structure has been performed on bis(η5-cyclopentadienyl)-2,5-bis(trimethylsilyl)-3,4-dimethylhafnacyclopentadiene crystallized in the triclinic space group P1 in a unit cell of dimensions a 9.067(3), b 10.421(3), c 12.296(4) Angstroem, α 100.13(2), β 87.52(2), γ 105.07(2) deg and V 1170.1(6) Angstroem3.The final agreement indices for 4719 reflections having F02>/=0 are R(F)=0.047.