Monocyclopentadienylzirconium trichloride

Monobipyridine copper complex, 45 289 Monobutyl phosphoric acid (HjMBP), in liquid-liquid extraction, 9 34 Monochlorogallane, 41 194-196 Monocyclopentadienylzirconium trichloride, 13 7... 

Monocyclopentadienylzirconium trichloride has been prepared from zirconium tetrachloride by reaction with cyclopentadienylmagnesium chloride in toluene/diethyl ether solution 240, 241). Both the chloride and bromide have been prepared from the corresponding tetrahalides and magnesium cyclopentadienide in xylene at 100°-110°C 451), or by continuous recirculation of cyclopentadiene vapor upward through a bed of zirconium trihalide (250°-300°C) resting on a glass sinter. The products were purified by sublimation. Yields were only about 15% compared to the 60-70% obtained from syntheses carried out in solution. The melting points and colors for the monocyclopentadienyl metal trihalides and for other cyclopentadienyl metal halide compounds are tabulated in Table I. 

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See also in sourсe #XX -- [ ]

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