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.
Referenze Bibliografiche
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fulltext bdim[5]
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[13]
L. PAULING,
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Zbl 0006.13702
Con il contributo del Ministero per i Beni e le Attività Culturali