The first single-crystal X-ray diffractometric structure analysis to be performed on a binary n-alkane phase was carried out on 0.77:0.23 C24H50:C26H54 in our laboratories in 1994. New insights are now provided from a detailed examination of the atomic coordinates. It is shown how impossibly short hydrogen-hydrogen atom intermolecular distances rule out certain types of end-to-end molecular packing, Even when these restrictions are taken into account, (HH)-H-. . . contacts exist which, although not short enough to rule out the molecular packing in question, are almost certainly responsible for anomalous temperature factors and for bending the otherwise normally straight backbone of these molecules. Our analysis shows that, as in the pure n-alkanes themselves, the molecular chains have the all-trans conformation. A proposal by Dorset that the chains in the binary phase have terminal gauche conformation,, is examined and dismissed.