(a) The mutual orientation of hexagonal and triclinic superstructure lattices. (b) Reciprocal space model obtained on the basis of calculations performed using triclinic superstructure orientation matrices determined by means of CrysAlis software for three twin components. The hexagonal reciprocal lattice is marked in yellow. This calculation shows how single peak reflections and split reflections arise. The split reflections consist of two reflections that are very close to each other and completely overlap in the experiment and a third reflection further away.