Struttura cristallina dell'isomero trans dell'esaetilcicloesano

Immirzi, Attilio ; Torti, Ernesto

Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 44 (1968) no. 1, pp. 98-103

Résumé

The rhombohedral unit cell dimensions of the trans isomer of hexaethylcyclohexane are a = b = 15.72, c = 4.78 Å; the space group is $R \overline 3$. The molecular symmetry, after four cycles of least squares refinement on 232 observed reflections (R = 0.097) is well represented by the D3d group. The six ${\text{}}_{\diagup}^{\diagdown} \text{[CH --- CH}_{2}\text{] ---}$ bonds are equatorial and each methyl group is trans with respect to the hydrogen atom on ${\text{---}}_{\diagup}^{\diagdown}\text{CH}$. Bond lengths and angles agree with the expected values and no intermolecular distance lower than 3.97 Å is found.