R. Karinen, Mikko S. Lylykangas, A. Krause
Jan 18, 2001
Citations
2
Influential Citations
24
Citations
Journal
Industrial & Engineering Chemistry Research
Abstract
The isomerization reaction of 2,4,4-trimethyl-1-pentene to 2,4,4-trimethyl-2-pentene was studied. In contrast to the general rule for alkene stability, an excess of the α-alkene (2,4,4-trimethyl-1-pentene) was observed in the thermodynamic equilibrium. The result is explained in terms of the molecular structure: the large and bulky substituents in 2,4,4-trimethyl-2-pentene cause steric tension and make the molecule less stable. A reaction enthalpy of 3.51 ± 0.03 kJ mol-1, i.e., endothermic reaction, and a reaction entropy of −0.47 ± 0.10 J mol-1 K-1 were determined from the experimental data of the isomerization reaction.