Figure 6
View parallel to (a) [102] of (S)-11-methylnonacosane (type 1), and (b) [201] of (S)-9-methylnonacosane (type 2), illustrating the hexagonal packing of rods. The main chain C atoms all lie close to a plane (as C—C—C—C torsion angles deviate from 180° by less than 10°) leading to distortion of the packing from perfect hexagonal, being elongated in (a) parallel to the ac plane, and in (b) perpendicular to the ac plane. |