Dynamic Behavior of Organozinc Compounds

Guijarro, Albert

doi:10.1002/9780470682531.pat0369

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2012

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“…For this type of exchange process, we suggest a transition state involving a μ 2 -η 1 :η 1 -coordination mode resembling the solid state structure of 1 . A transition state with two (μ 2 -η 1 :η 1 -C 3 H 5 ) − groups would be symmetry forbidden …”

Section: Resultsmentioning

confidence: 99%

Bis(allyl)zinc Revisited: Sigma versus Pi Bonding of Allyl Coordination

et al. 2012

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The reinvestigation of two allyl zinc compounds, parent bis(allyl)zinc [Zn(C(3)H(5))(2)] (1) and 2-methallyl chloro zinc [Zn(C(4)H(7))Cl] (2), revealed two new coordination modes in the solid state for the allyl ligand, viz cis- and trans-μ(2)-η(1):η(1). These results call for modification of the conventional interpretation of zinc-allyl interactions. Computational results indicate that the classical η(3)-bonding mode of the allyl ligand is not favored in zinc compounds. A rare case of a zinc-olefin interaction in the dimer of [Zn(η(1)-C(3)H(5))(OC(C(3)H(5))Ph(2))] was found in the monoinsertion product of 1 with benzophenone.

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Section: Resultsmentioning

confidence: 99%