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http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17647| Title: | Kinetics and Mechanism of the Reactions of Triethylaluminium with Phenylacetylene |
| Authors: | Allen, P. E. M. Lough, R. M. |
| Keywords: | Chemistry Kinetics Triethylaluminium Phenylacetylene Journal of the Chemical Society : Faraday Transaction - I |
| Issue Date: | 1973 |
| Publisher: | Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (5) |
| Abstract: | The kinetics of the reactions between triethylaluminium and phenylacetylene have been studied in cyclohexane between 313 and 333 K. Two reactions are observed; metallation, which proceeds by the bimolecular reaction of dimeric triethylaluminium and phenylacetylene with a rate coefficient k2= 106.8 ± 1.5 e–(64000 ± 2900K/8.314T) dm3 mol–1 s–1, and addition which proceeds by way of an alkyne π-complex (I). The equilibrium constant for the formation of (I) has been estimated. The rate controlling step of the addition reaction is a rearrangement of (I), through a four-centre transition state, with a rate coefficient k1= 1011.6 ± 0.9 e–(94000 ± 2500K)/8.314T) s–1. |
| URI: | http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17647 |
| Appears in Collections: | Journal Articles (before-1995) |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 849-856.pdf Restricted Access | 700.27 kB | Adobe PDF | View/Open Request a copy |
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