Spikelets NMR spectra are very popular as they enable the shortening of experimental time and give the possibility to obtain required NMR parameters for nuclei with ultrawide NMR patterns. Unfortunately, these resulted ssNMR spectra cannot be fitted directly in common software. For this reason, we developed UWNMRSpectralShape (USS) software which transforms spikelets NMR patterns into single continuous lines. Subsequently, these reconstructed spectral envelopes of the (Q)CPMG spikelets patterns can be loaded into common NMR software and automatically fitted, independently of experimental settings. This allows the quadrupole and chemical shift parameters to be accurately determined. Moreover, it makes fitting of spikelets NMR spectra exact, fast and straightforward.

Department of Physical and Macromolecular Chemistry Faculty of Science Charles University Hlavova 8 128 40 Prague 2 Czech Republic

Department of Physics Chemistry and Biology Linköping University SE 581 83 Linköping Sweden

Department of Structural Analysis Institute of Physics of the Czech Academy of Sciences Na Slovance 2 182 21 Prague 8 Czech Republic

Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam 2 162 06 Prague 6 Czech Republic

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