Rotational isomerism of vinylmethyltelluride
Physical Chemistry
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Conclusions
- 1.
In the IR spectrum of solutions of vinylmethyltelluride in n-heptane the doublet form of the valence oscillation band of the double bond is due to rotational isomerism. By analyzing the temperature dependence of the doublet shape, the low-frequency component of the doublet was identified as the s-cis-rotamer.
- 2.
The differences in the enthalpies (4.6 ±0.2 kJ/mole) and entropies (-11.1 ±0.3 e.u.) of the vinlymethyltelluride rotamers have been calculated and it has been shown that the p,Πconjugation in its molecule is weaker by a factor of 2 than in vinylmethylsulfide.
Keywords
Entropy Enthalpy Double Bond Rotational Isomerism Oscillation Band
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Literature cited
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© Plenum Publishing Corporation 1987