All primary data files for the publication can be found here. Procedures, reaction conditions and used analytical equipment is discussed in detail in the experimental section or the supporting information of the paper. Nuclear magnetic resonance (NMR) Spectra are named according to the numbering in the publication. ¹H-NMR, ¹⁹F-NMR and ¹³C-NMR spectra were recorded using a Bruker Avance III 400 (400MHzfor 1H, 101MHz for 13C) spectrometer. NMR files can be opened with software such as MestReNova or TopSpin. Size exclusion chromatography (SEC) and Matrix Assisted Laser Desorption Ionization - Time of Flight Mass Spectrometry (MALDI-TOF-MS) data are provided as text-files and can be plotted with software such as MS Excel.