Crystal structures and vibrational spectra of L-argininium(2+) bis (tetrafluoroborate) and L-argininium(2+) bis(perchlorate)

摘要

In the present work crystal structures of (L-ArgH(2))(BF4)(2) (I) and (L-ArgH(2))(ClO4)(2) (II) isostructural salts have been determined. They crystallize in triclinic system with space group P1 and Z = 1. Structure features of the (I) and (II) were compared with respective data of previously known (L-ArgH)(BF4) and (L-ArgH)(ClO4) salts with singly charged L-argininium(+) cation. Infrared and Raman spectra of the (I) and (II) are compared with spectra of (L-ArgH)(BF4) and (L-ArgH)(ClO4) salts. The presence of cation and anions and hydrogen bonds between them are reflected in the IR and Raman spectra. The crystals (I) and (II) exhibit second harmonic generation activity. (c) 2019 Elsevier B.V. All rights reserved.