in perdeuterocyclohexane byproducts: H2; under N2; in NMR tube; Zr complex suspended in cyclohexane-d12; C6F6 (10equiv.) added; stirred at room temp. for 18 h; not isolated; detd. by (1)H and (19)F NMR spectra; mixt. of Me2Si(C5Me4)2ZrHF, Me2Si(C5Me4)2Zr(C6F5)H, Me2Si(C5Me4)2Zr(o-C6F4H)H (4.5:1.8:1) andsmall amt. of Me2Si(C5Me4)2ZrF2 obtained;