Powder X-ray Diffraction and Chemical Analysis. The reacted samples were routinely characterized by on a Stoe diffractometer (Ge(111) monochromator for Cu-Kα1 radiation: λ = 1.54056 Å) equipped with a linear position sensitive (PSD) detector. Samples were prepared inside the glove-box by grinding into a fine powder in an agate mortar, placing the samples between two pieces of Mylar foil with a thin layer of silicon vacuum grease and mounted in the sample holder. This was done so to protect the crystallites from the atmosphere during the data collection. Nevertheless, because of the low symmetry and very large unit cell, in addition to the compound's air sensitivity, the recorded powder pattern shows very poor intensity statistics and problematic background. The pattern was also very convoluted due to the presence of secondary phases. Hence, from the X-ray powder diffraction pattern, we could just confirm that the reaction products are multi-phasic with significant amounts of other yet unidentified phases.