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Rotational energy barrier of the polarized carbon-carbon double bond in 3-(4-dimethylaminobenzylidene)pentane-2,4-dione

✍ Scribed by Issa Yavari; Afsaneh Zonouzi; Rahim Hekmat-Shoar

Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
132 KB
Volume
39
Category
Article
ISSN
0040-4039

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✦ Synopsis

A dynamic NMR effect is observed in the t H NMR. spectra of the title compound in the vicinity of 186 Β°C, and is attributed to restricted rotation around the polarized carbon-carbon double bond. The free energy of activation (A G* ) for this process is 105 _+ 2 k J mol "1 in nitrobenzene as a solvent.

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