Key points are not available for this paper at this time.
Efficient hydrophobic packing, driven by molecular offset within the hydrogen-bonded layers of α,ω-alkanediols and diamines, is allowed by the geometry of the even-numbered members (left in the picture). In contrast, the geometry of the odd-numbered members (right in the picture) forbids such packing and leads to the observed density and melting point alternation.
Thalladi et al. (2000) studied this question.