l-Proline–sodium nitrate obtained from solvent drop grinding

l-Proline sodium nitrate was obtained by the solvent drop grinding (SDG) technique. The compound was characterized by X-ray powder diffraction (XRPD), infrared spectroscopy (FTIR) and thermal analysis (DSC/TGA). Additionally, the material was tested for second harmonic generation (SHG). XRPD confirmed the presence of a new phase with a 1:1 stoichiometry and its crystal structure was determined. The FTIR spectroscopy depicted accurately the molecular characteristics of the compound and the thermal analysis showed that the compound is stable below 160 °C. Surprisingly, the compound displayed modest NLO properties which were strongly affected by its crystal packing features.

A novel compound l-proline–sodium nitrate (LPSN) was engineering by solvent assisted grinding (SAG) and its crystal structure was fully determined by ab initio methods using X-ray powder diffraction (XRPD). Surprisingly, the compound displayed different crystal packing features than other amino acid–sodium nitrate compounds which strongly affected its SHG efficiency.Figure optionsDownload as PowerPoint slide