Low-temperature kinetic NMR studies on the insertion of a single olefin molecule into a Zr-C bond: Assessing the counterion-solvent interplay

L. Rocchigiani; G. Ciancaleoni; C. Zuccaccia; A. MacChioni

doi:10.1002/anie.201105122

Low-temperature kinetic NMR studies on the insertion of a single olefin molecule into a Zr-C bond: Assessing the counterion-solvent interplay

L. Rocchigiani
, G. Ciancaleoni
, C. Zuccaccia
, A. MacChioni

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Sticky counterions: Low‐temperature kinetic NMR studies were performed to determine ΔH^≠ and ΔS^≠ values for the insertion of a single 2‐methyl‐1‐heptene molecule into a Zr-C bond of [Cp₂Zr(η²‐CH₂NMePh)][X] (1a: X⁻=MeB(C₆F₅)₃−, 1b: B(C₆F₅)₄−) in [D₈]toluene and a 1:1 mixture of [D₈]toluene and [D₅]chlorobenzene. Both activation parameters critically depend on the interplay of the counterion and the solvent.

Original language	English
Pages (from-to)	11752-11755
Journal	Angewandte Chemie - International Edition
Volume	50
Issue number	49
Early online date	11 Oct 2011
DOIs	https://doi.org/10.1002/anie.201105122
Publication status	Published - 2 Dec 2011

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10.1002/anie.201105122

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abstract = "Sticky counterions: Low‐temperature kinetic NMR studies were performed to determine ΔH≠ and ΔS≠ values for the insertion of a single 2‐methyl‐1‐heptene molecule into a Zr-C bond of [Cp2Zr(η2‐CH2NMePh)][X] (1a: X−=MeB(C6F5)3−, 1b: B(C6F5)4−) in [D8]toluene and a 1:1 mixture of [D8]toluene and [D5]chlorobenzene. Both activation parameters critically depend on the interplay of the counterion and the solvent.",

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AU - Zuccaccia, C.

AU - MacChioni, A.

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AB - Sticky counterions: Low‐temperature kinetic NMR studies were performed to determine ΔH≠ and ΔS≠ values for the insertion of a single 2‐methyl‐1‐heptene molecule into a Zr-C bond of [Cp2Zr(η2‐CH2NMePh)][X] (1a: X−=MeB(C6F5)3−, 1b: B(C6F5)4−) in [D8]toluene and a 1:1 mixture of [D8]toluene and [D5]chlorobenzene. Both activation parameters critically depend on the interplay of the counterion and the solvent.

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ER -

Low-temperature kinetic NMR studies on the insertion of a single olefin molecule into a Zr-C bond: Assessing the counterion-solvent interplay

Abstract

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