Grazing incidence X-ray diffraction (GIXD) experiments were performed at the KMC-2 beamline21 at the BESSY II synchrotron radiation source (Helmholtz Zentrum Berlin (HZB), Berlin, Germany) using an X-ray wavelength of 1.00 Å. A 2D VÅNTEC-2000 Mikrogap detector (BRUKER) equipped with an anti-air-scatter cone was used to record intensities. An incident angle of α i = 0.13°, close to the critical angle of the substrate, was chosen to enhance the scattered intensities and suppress scattering from the substrate. Reciprocal space maps were calculated from the measured data using the xrayutilities library for Python.22 Unit cell indexation and the calculation of structure factors was performed using the in-house developed software PyGID.23