Compounds Containing Multi-hapto Bonded Groups

Diorganozinc Compounds Containing Multi-hapto Bonded Groups [Pg.60]

Due to disorder in the cyclopentadienyl groups the exact bonding of the cyclopentadienyl group to zinc remained uncertain, but it has been suggested that the cyclopentadienyl group is /7 -bonded to one zinc atom and r -bonded to the other one. In solution, however, cryoscopic measurements in benzene pointed to the existence of discrete monomeric species. IR and H NMR studies of solutions of 57 are consistent with /j -binding of the cyclopentadienyl group to zinc in a symmetric Csy structure. [Pg.61]

FIGURE 29. Part of the polymeric chain of 58 in the solid state. Note the disordered cyclopentadienyl groups bridging between zinc atoms of the same type [Pg.61]

Johann T. B. H. Jastrzebski, Jaap Boersma and Gerard van Koten [Pg.62]

To overcome the problem of crystallographic disorder during the structural characterization by X-ray crystallography, various substituted cyclopentadienyl compounds, i.e. [f-Bu(Me)4C5]2Zn (60) , [Ph(Me)4C5]2Zn (61) , [(i-Pr)4C5H]2Zn (62) and [(MesSi) [Pg.62]

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