Research data for article: Interplay of polar order and positional order in liquid crystals–observation of re-entrant ferroelectric nematic phase

The stored dataset includes:1) publication in Angewandte Chemie International Editon (manuscript and Supporting Information, pdf format ) - see also https://doi.org/10.1002/anie.2025163022) NMR data for chemical characterization of the GS-n-Re compounds 3) numerical data (2D detector images – Bruker .gfrm format, reduced 1D diffractograms - binary Bruker .raw format and ASCI .txt files) for small angle X-ray diffraction studies performed for final compounds GS-5-Re (7761) and SR-6-Re (7777). Also the determined temperature dependence of layer spacing for compound SR-6-Re (7777)4) numerical data (ASCI) for optical birefringence measured vs. temperature for compounds SR-4-Re (7775), SR-6-Re (7777), SR-7-Re (7778) and GS-5-Re (7761)5) numerical data (ASCI .txt file) for dielectric permittivity measured vs. temperature and frequency for final compound SR-6-Re (7777)6) numerical data (ASCI .txt files) for spontaneous electric polarization for compounds SR-4-Re (7775), SR-6-Re (7777), SR-7-Re (7778) and GS-5-Re (7761)