To study the packing behavior of 1 and 2, single crystals of both macrocycles were grown. Diffraction-quality needle-shaped single crystals of 1 were produced by allowing the solution of 1 in hot N,Ndiethylacetamide (DEA) to first slowly cool down to room temperature and then slowly evaporate over two days. Rod-shaped single crystals of 2 were obtained from its hot solution of THF, which was first slowly cooled to room temperature and then left to slowly evaporate over two days.