text: The H NMR spectra were recorded at a resonance frequency of 400 MHz with a resolution of 0.0625 Hz or at 90 MHz with a resolution of 0.125 Hz. The spectral acquisition was carried out using a flip angle of 22.5 – 30.0 degrees and a pulse repetition time of 30 seconds. Samples were prepared by dissolution in deuterated chloroform (CDCl), deuterium oxide (DO), or deuterated dimethylsulfoxide (DMSO-d). Each spectrum is accompanied by a list of peaks with their respective intensities and chemical shifts reported in ppm and in Hz. Most spectra show the peak assignment. This collection contains ca 15,900 spectra and is being updated.